diff --git a/errors/const.go b/errors/const.go
index 4e9573f..26f71c6 100644
--- a/errors/const.go
+++ b/errors/const.go
@@ -19,4 +19,10 @@ const (
 
 	// if the argument is not valid
 	InvalidArgument ErrCode = 3
+
+	// Unauthorized request error
+	Unauthorized ErrCode = 4
+
+	// Forbidden action error
+	Forbidden ErrCode = 5
 )
diff --git a/errors/errors.go b/errors/errors.go
index 9d2e677..6555be9 100644
--- a/errors/errors.go
+++ b/errors/errors.go
@@ -74,3 +74,15 @@ func IsAlreadyExists(err error) bool {
 func IsInvalidArgument(err error) bool {
 	return GetErrCode(err) == InvalidArgument
 }
+
+// IsUnauthorized returns true if err
+// is due to Unauthorized request
+func IsUnauthorized(err error) bool {
+	return GetErrCode(err) == Unauthorized
+}
+
+// IsForbidden returns true if err
+// is due to Forbidden action
+func IsForbidden(err error) bool {
+	return GetErrCode(err) == Forbidden
+}