diff --git a/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioMetadataSubDescriptor.java b/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioMetadataSubDescriptor.java
index 354ef869..659c1923 100644
--- a/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioMetadataSubDescriptor.java
+++ b/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioMetadataSubDescriptor.java
@@ -78,12 +78,20 @@ public ADMAudioMetadataSubDescriptorBO(KLVPacket.Header header, ByteProvider byt
 
         /**
          * Accessor for the riff_chunk_stream_id_link1 of this ADMAudioMetadataSubDescriptor
-         * @return a byte array representing the riff_chunk_stream_id_link1 for the ADMAudioMetadataSubDescriptor
+         * @return a Long value representing the riff_chunk_stream_id_link1 for the ADMAudioMetadataSubDescriptor
          */
         public Long getRIFFChunkStreamID_link1(){
             return this.riff_chunk_stream_id_link1;
         }
 
+        /**
+         * Accessor for the adm_profile_level_batch of this ADMAudioMetadataSubDescriptor
+         * @return a collection representing the adm_profile_level_batch for the ADMAudioMetadataSubDescriptor
+         */
+        public  CompoundDataTypes.MXFCollections.MXFCollection<UL>  getADMProfileLevelULBatch(){
+            return this.adm_profile_level_batch;
+        }
+
         /**
          * A method that returns a string representation of the object.
          *
diff --git a/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioTrackFileConstraints.java b/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioTrackFileConstraints.java
index da3dd219..a1da66b3 100644
--- a/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioTrackFileConstraints.java
+++ b/src/main/java/com/netflix/imflibrary/st2067_204/ADMAudioTrackFileConstraints.java
@@ -64,172 +64,149 @@ public static void checkCompliance(IMFConstraints.HeaderPartitionIMF headerParti
 
                     // ST 2067-204 section 4.1
                     if (!waveAudioEssenceDescriptor.getChannelAssignmentUL().equals(AUDIO_LABELING_FRAMEWORK_ADM_CONTENT_UL.getULAsMXFUid())) {
-                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.NON_FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.NON_FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
                                 String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s has an illegal value %s in the ChannelAssignment item, shall be %s", packageID.toString(), waveAudioEssenceDescriptor.getChannelAssignmentUL().toString(), AUDIO_LABELING_FRAMEWORK_ADM_CONTENT_UL.toString()));
                     }
 
-               /*     List<InterchangeObject.InterchangeObjectBO> subDescriptors = headerPartition.getSubDescriptors();
+                    List<InterchangeObject.InterchangeObjectBO> subDescriptors = headerPartition.getSubDescriptors();
                     // Section 5.10.2
                     if (subDescriptors.size() == 0) {
-                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s does not have subdescriptors", packageID.toString()));
+                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s does not have subdescriptors", packageID.toString()));
                     } else {
                         List<InterchangeObject.InterchangeObjectBO> audioChannelLabelSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(AudioChannelLabelSubDescriptor.class)).collect(Collectors.toList());
+                        // ST 2067-4 section 4.4.1
                         if (audioChannelLabelSubDescriptors.size() != 0) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s has %d illegal AudioChannelLabelSubDescriptor(s)", packageID.toString(), audioChannelLabelSubDescriptors.size()));
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s has %d illegal AudioChannelLabelSubDescriptor(s)", packageID.toString(), audioChannelLabelSubDescriptors.size()));
                         }
                         List<InterchangeObject.InterchangeObjectBO> soundFieldGroupLabelSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(SoundFieldGroupLabelSubDescriptor.class)).collect(Collectors.toList());
                         if (soundFieldGroupLabelSubDescriptors.size() != 0) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s has %d illegal SoundFieldGroupLabelSubDescriptor(s)", packageID.toString(), soundFieldGroupLabelSubDescriptors.size()));
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s has %d illegal SoundFieldGroupLabelSubDescriptor(s)", packageID.toString(), soundFieldGroupLabelSubDescriptors.size()));
                         }
                         List<InterchangeObject.InterchangeObjectBO> groupOfSoundFieldGroupsLabelSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(GroupOfSoundFieldGroupLabelSubDescriptor.class)).collect(Collectors.toList());
                         if (groupOfSoundFieldGroupsLabelSubDescriptors.size() != 0) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s has %d illegal SoundFieldGroupLabelSubDescriptor(s)", packageID.toString(), groupOfSoundFieldGroupsLabelSubDescriptors.size()));
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s has %d illegal GroupOfSoundFieldGroupLabelSubDescriptor(s)", packageID.toString(), groupOfSoundFieldGroupsLabelSubDescriptors.size()));
                         }
                         
-                        //
-                        // ContainerConstraintsSubDescriptor (ST 379-2)
-                        //
-                        List<InterchangeObject.InterchangeObjectBO> containerConstraintsSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ContainerConstraintsSubDescriptor.class)).collect(Collectors.toList());
-                        if (containerConstraintsSubDescriptors.isEmpty()) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.APPLICATION_COMPOSITION_ERROR,
-                                    IMFErrorLogger.IMFErrors.ErrorLevels.WARNING,
-                                    String.format("Track File with ID %s: A ContainerConstraintsSubDescriptor shall be present per ST 379-2, but is missing", packageID.toString()));
-                        } else if (containerConstraintsSubDescriptors.size() != 1) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.APPLICATION_COMPOSITION_ERROR,
-                                    IMFErrorLogger.IMFErrors.ErrorLevels.WARNING,
-                                    String.format("Track File with ID %s: One ContainerConstraintsSubDescriptor shall be present per ST 379-2, but %d are present", packageID.toString(), containerConstraintsSubDescriptors.size()));
+                        List<InterchangeObject.InterchangeObjectBO> adm_CHNASubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADM_CHNASubDescriptor.class)).collect(Collectors.toList());
+                        // ST 2131 section 10.2 ADM_CHNASubDescriptor
+                        if (adm_CHNASubDescriptors.size() != 1) {
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s shall reference exactly one ADM_CHNASubDescriptor, the actual number is %d", packageID.toString(), adm_CHNASubDescriptors.size()));
+                        }
+                        List<InterchangeObject.InterchangeObjectBO> riffChunkReferencesSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(RIFFChunkReferencesSubDescriptor.class)).collect(Collectors.toList());
+                        // ST 2131 section 10.2 RIFFChunkReferencesSubDescriptor
+                        if (riffChunkReferencesSubDescriptors.size() != 1) {
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s shall reference exactly one RIFFChunkReferencesSubDescriptor, the actual number is %d", packageID.toString(), riffChunkReferencesSubDescriptors.size()));
                         }
                         
                         //
-                        // MGASoundEssenceDescriptor
+                        // ADMSoundfieldGroupLabelSubDescriptor
                         //
-                        List<InterchangeObject.InterchangeObjectBO> mgaSoundfieldGroupLabelSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADMSoundfieldGroupLabelSubDescriptor.class)).collect(Collectors.toList());
-                        if (mgaSoundfieldGroupLabelSubDescriptors.size() == 0) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s refers to zero MGASoundfieldGroupLabelSubDescriptors, 1 is required per Soundfield Group", packageID.toString()));
+                        List<InterchangeObject.InterchangeObjectBO> admSoundfieldGroupLabelSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADMSoundfieldGroupLabelSubDescriptor.class)).collect(Collectors.toList());
+                        if (admSoundfieldGroupLabelSubDescriptors.size() == 0) {
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s refers to zero ADMSoundfieldGroupLabelSubDescriptor, 1 is required per Soundfield Group", packageID.toString()));
                         } else {
-                            // ST 2067-203 section 5.6.2 Table 3
-                            ADMSoundfieldGroupLabelSubDescriptor.MGASoundfieldGroupLabelSubDescriptorBO mgaSoundfieldGroupLabelSubDescriptorBO = null;
+                            // ST 2067-204 section 4.4.2 Table 2
+                            ADMSoundfieldGroupLabelSubDescriptor.ADMSoundfieldGroupLabelSubDescriptorBO admSoundfieldGroupLabelSubDescriptorBO = null;
 
-                            for (InterchangeObject.InterchangeObjectBO  sub_descriptor : mgaSoundfieldGroupLabelSubDescriptors) {
-                                mgaSoundfieldGroupLabelSubDescriptorBO = ADMSoundfieldGroupLabelSubDescriptor.MGASoundfieldGroupLabelSubDescriptorBO.class.cast(sub_descriptor);
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagName() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATagName", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                            for (InterchangeObject.InterchangeObjectBO  sub_descriptor : admSoundfieldGroupLabelSubDescriptors) {
+                                admSoundfieldGroupLabelSubDescriptorBO = ADMSoundfieldGroupLabelSubDescriptor.ADMSoundfieldGroupLabelSubDescriptorBO.class.cast(sub_descriptor);
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCATagName() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATagName", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 } else {
-                                    if (!mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagName().equals(ADMSoundfieldGroupLabelSubDescriptor.MGA_MCA_TAG_NAME)) {
-                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                                String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have a valid MCATagName: %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagName()));
+                                    if (!admSoundfieldGroupLabelSubDescriptorBO.getMCATagName().equals(ADMSoundfieldGroupLabelSubDescriptor.ADM_MCA_TAG_NAME)) {
+                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                                String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have a valid MCATagName: %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), admSoundfieldGroupLabelSubDescriptorBO.getMCATagName()));
                                     }
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATagSymbol", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATagSymbol", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 } else {
-                                    if (!mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol().equals(ADMSoundfieldGroupLabelSubDescriptor.MGA_MCA_TAG_SYMBOL)) {
-                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                                String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have a valid MCATagSymbol: %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), mgaSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol()));
+                                    if (!admSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol().equals(ADMSoundfieldGroupLabelSubDescriptor.ADM_MCA_TAG_SYMBOL)) {
+                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                                String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have a valid MCATagSymbol: %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), admSoundfieldGroupLabelSubDescriptorBO.getMCATagSymbol()));
                                     }
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCALabelDictionaryId", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCALabelDictionaryId", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 } else {
-                                    if (!mgaSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId().equals(ADMSoundfieldGroupLabelSubDescriptor.MGA_MCA_LABEL_DICTIONNARY_ID_UL)) {
-                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                                String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have the required MCA Label Dictionary Id %s but %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), ADMSoundfieldGroupLabelSubDescriptor.MGA_MCA_LABEL_DICTIONNARY_ID_UL, mgaSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId().toString()));
+                                    if (!admSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId().equals(ADMSoundfieldGroupLabelSubDescriptor.ADM_MCA_LABEL_DICTIONNARY_ID_UL)) {
+                                        imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                                String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s does not have the required MCA Label Dictionary Id %s but %s", sub_descriptor.getInstanceUID().toString(), packageID.toString(), ADMSoundfieldGroupLabelSubDescriptor.ADM_MCA_LABEL_DICTIONNARY_ID_UL, admSoundfieldGroupLabelSubDescriptorBO.getMCALabelDictionnaryId().toString()));
                                     }
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage() != null &&
-                                        !IMFConstraints.isSpokenLanguageRFC5646Compliant(mgaSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage())) {
-                                    imfErrorLogger.addError(new ErrorLogger.ErrorObject(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.NON_FATAL, String.format("Language Code (%s) in MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackfile represented by ID %s is not RFC5646 compliant", mgaSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage(), sub_descriptor.getInstanceUID().toString(), packageID.toString())));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage() != null &&
+                                        !IMFConstraints.isSpokenLanguageRFC5646Compliant(admSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage())) {
+                                    imfErrorLogger.addError(new ErrorLogger.ErrorObject(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_ESSENCE_COMPONENT_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.NON_FATAL, String.format("Language Code (%s) in ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackfile represented by ID %s is not RFC5646 compliant", admSoundfieldGroupLabelSubDescriptorBO.getRFC5646SpokenLanguage(), sub_descriptor.getInstanceUID().toString(), packageID.toString())));
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCAContent() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCAContent", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCAContent() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCAContent", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCAUseClass() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCAUseClass", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCAUseClass() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCAUseClass", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCATitle() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATitle", sub_descriptor.getInstanceUID().toString(), sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCATitle() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATitle", sub_descriptor.getInstanceUID().toString(), sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCATitleVersion() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATitleVersion", sub_descriptor.getInstanceUID().toString(), sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCATitleVersion() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing MCATitleVersion", sub_descriptor.getInstanceUID().toString(), sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                // Section C.2
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getMCAChannelID() != null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has forbidden MCAChannelID %d", sub_descriptor.getInstanceUID().toString(), packageID.toString(), mgaSoundfieldGroupLabelSubDescriptorBO.getMCAChannelID()));
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getMCAChannelID() != null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has forbidden MCAChannelID %d", sub_descriptor.getInstanceUID().toString(), packageID.toString(), admSoundfieldGroupLabelSubDescriptorBO.getMCAChannelID()));
                                 }
-                                // ST 2067-203 Table 8
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getADMAudioProgrammeId() == null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing ADMAudioProgrammId", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                // ST 2067-204 Table 7
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getADMAudioProgrammeId() == null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s is missing ADMAudioProgrammId", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                // ST 2067-203 Table 8
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getADMAudioContentId() != null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has an illegal ADMAudioContentId item", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                // ST 2067-204 Table 7
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getADMAudioContentId() != null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has an illegal ADMAudioContentId item", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
-                                // ST 2067-203 Table 8
-                                if (mgaSoundfieldGroupLabelSubDescriptorBO.getADMAudioObjectId() != null) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGASoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has an illegal ADMAudioObjectId item", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
+                                // ST 2067-204 Table 7
+                                if (admSoundfieldGroupLabelSubDescriptorBO.getADMAudioObjectId() != null) {
+                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                            String.format("ADMSoundfieldGroupLabelSubDescriptor with ID %s in the IMFTrackFile represented by ID %s has an illegal ADMAudioObjectId item", sub_descriptor.getInstanceUID().toString(), packageID.toString()));
                                 }
                             }
                         }
                         //
-                        // MGAAudioMetadataSubDescriptor
+                        // ADMAudioMetadataSubDescriptor
                         //
-                        int mgaAudioMetadataPayloadULArrraySize = 0;
-                        List<InterchangeObject.InterchangeObjectBO> mgaAudioMetadataSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADMAudioMetadataSubDescriptor.class)).collect(Collectors.toList());
-                        if (mgaAudioMetadataSubDescriptors.size() != 1) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("MGASoundEssenceDescriptor in the IMFTrackFile represented by ID %s refers to %d MGAAudioMetadataSubDescriptor, 1 is required per ST 2067-203", packageID.toString(), mgaAudioMetadataSubDescriptors.size()));
+                        int admAudioMetadataPayloadULArrraySize = 0;
+                        List<InterchangeObject.InterchangeObjectBO> admAudioMetadataSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADMAudioMetadataSubDescriptor.class)).collect(Collectors.toList());
+                        if (admAudioMetadataSubDescriptors.size() != 1) {
+                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                    String.format("WAVE Audio Essence Descriptor in the IMFTrackFile represented by ID %s refers to %d ADMAudioMetadataSubDescriptor, 1 is required per ST 2067-204", packageID.toString(), admAudioMetadataSubDescriptors.size()));
                         } else {
-                            // ST 2067-203 section 5.6.2 Table 3
-                            ADMAudioMetadataSubDescriptor.MGAAudioMetadataSubDescriptorBO mgaAudioMetadataSubDescriptorBO = ADMAudioMetadataSubDescriptor.MGAAudioMetadataSubDescriptorBO.class.cast(mgaAudioMetadataSubDescriptors.get(0));
+                            // ST 2067-204 section 5.6.2 Table 3
+                            ADMAudioMetadataSubDescriptor.ADMAudioMetadataSubDescriptorBO admAudioMetadataSubDescriptorBO = ADMAudioMetadataSubDescriptor.ADMAudioMetadataSubDescriptorBO.class.cast(admAudioMetadataSubDescriptors.get(0));
 
-                            if (mgaAudioMetadataSubDescriptorBO.getMGALinkId().length == 0) {
-                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                        String.format("MGAAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing MGALinkId", packageID.toString()));
-                            }
-                            if (mgaAudioMetadataSubDescriptorBO.getMGAAudioMetadataIndex() == null) {
-                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                        String.format("MGAAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing MGAAudioMetadataIndex", packageID.toString()));
-                            }
-                            if (mgaAudioMetadataSubDescriptorBO.getMGAAudioMetadataIdentifier() == null) {
-                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                        String.format("MGAAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing MGAAudioMetadataIdentifier", packageID.toString()));
+                            if (admAudioMetadataSubDescriptorBO.getRIFFChunkStreamID_link1() == null) {
+                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                        String.format("ADMAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing MGALinkId", packageID.toString()));
                             }
-                            if (mgaAudioMetadataSubDescriptorBO.getMGAAudioMetadataPayloadULArrray() == null) {
-                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                        String.format("MGAAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing MGAAudioMetadataPayloadULArrray", packageID.toString()));
-                            } else {
-                                mgaAudioMetadataPayloadULArrraySize = mgaAudioMetadataSubDescriptorBO.getMGAAudioMetadataPayloadULArrray().size();
-                                if (mgaAudioMetadataPayloadULArrraySize == 0) {
-                                    imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                            String.format("MGAAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s has an empty MGAAudioMetadataPayloadULArrray", packageID.toString()));
-                                }
+                            if (admAudioMetadataSubDescriptorBO.getADMProfileLevelULBatch() == null) {
+                                imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.WARNING, IMF_ADM_AUDIO_EXCEPTION_PREFIX +
+                                        String.format("ADMAudioMetadataSubDescriptor in the IMFTrackFile represented by ID %s is missing ADMProfileLevelULBatch", packageID.toString()));
                             }
                         }
-                        //
-                        // ADMAudioMetadataSubDescriptor
-                        //
-                        List<InterchangeObject.InterchangeObjectBO> admAudioMetadataSubDescriptors = subDescriptors.subList(0, subDescriptors.size()).stream().filter(interchangeObjectBO -> interchangeObjectBO.getClass().getEnclosingClass().equals(ADMAudioMetadataSubDescriptor.class)).collect(Collectors.toList());
-                        if (admAudioMetadataSubDescriptors.size() != 1) {
-                            imfErrorLogger.addError(IMFErrorLogger.IMFErrors.ErrorCodes.IMF_CORE_CONSTRAINTS_ERROR, IMFErrorLogger.IMFErrors.ErrorLevels.FATAL, IMF_MGASADM_EXCEPTION_PREFIX +
-                                    String.format("Wave Audio Essence Descriptor in the IMFTrackFile represented by ID %s refers to %d ADMAudioMetadataSubDescriptor, 1 is required per ST 2067-204", packageID.toString(), admAudioMetadataSubDescriptors.size()));
-                        }
-                    }*/
+                    }
                 }
             }
         }
diff --git a/src/main/java/com/netflix/imflibrary/st2067_204/ADM_CHNASubDescriptor.java b/src/main/java/com/netflix/imflibrary/st2067_204/ADM_CHNASubDescriptor.java
index 7c201f51..01105585 100644
--- a/src/main/java/com/netflix/imflibrary/st2067_204/ADM_CHNASubDescriptor.java
+++ b/src/main/java/com/netflix/imflibrary/st2067_204/ADM_CHNASubDescriptor.java
@@ -89,8 +89,8 @@ public ADM_CHNASubDescriptorBO(KLVPacket.Header header, ByteProvider byteProvide
         }
 
         /**
-         * Accessor for the mga_link_id of this MGAAudioMetadataSubDescriptor
-         * @return a byte array representing the mga_link_id for the MGAAudioMetadataSubDescriptor
+         * Accessor for the adm_channel_mappings_array of this ADM_CHNASubDescriptor
+         * @return a byte array representing the adm_channel_mappings_array for the ADM_CHNASubDescriptor
          */
         public CompoundDataTypes.MXFCollections.MXFCollection<StrongRef> getADMChannelMappingsArray(){
             return this.adm_channel_mappings_array;