From b9d929db39ea1deb9420a26625b742c555c24504 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 3 Feb 2026 08:21:37 +0000
Subject: [PATCH 1/2] Initial plan


From 0cc4c558fc9bc5541abdc3217f742efadd877ed0 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 3 Feb 2026 08:33:49 +0000
Subject: [PATCH 2/2] Fix payload/xml XmlErrorValue response content-type for
 consistency

Wrap SimpleModel with content-type "application/xml" header to match
XmlError's content-type, ensuring consistent XML formatting for both
success and error responses.

Co-authored-by: msyyc <70930885+msyyc@users.noreply.github.com>
---
 .../fix-payload-xml-content-type-2026-02-03-08-23-21.md    | 7 +++++++
 packages/http-specs/specs/payload/xml/main.tsp             | 5 ++++-
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 .chronus/changes/fix-payload-xml-content-type-2026-02-03-08-23-21.md

diff --git a/.chronus/changes/fix-payload-xml-content-type-2026-02-03-08-23-21.md b/.chronus/changes/fix-payload-xml-content-type-2026-02-03-08-23-21.md
new file mode 100644
index 00000000000..ae27da44ecd
--- /dev/null
+++ b/.chronus/changes/fix-payload-xml-content-type-2026-02-03-08-23-21.md
@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/http-specs"
+---
+
+Fix payload/xml XmlErrorValue response to wrap SimpleModel with content-type "application/xml" for consistency with XmlError
diff --git a/packages/http-specs/specs/payload/xml/main.tsp b/packages/http-specs/specs/payload/xml/main.tsp
index b280bbe9758..4beab6443f0 100644
--- a/packages/http-specs/specs/payload/xml/main.tsp
+++ b/packages/http-specs/specs/payload/xml/main.tsp
@@ -329,5 +329,8 @@ interface XmlErrorValue {
     ```
     """)
   @get
-  get(): SimpleModel | XmlError;
+  get(): {
+    @header("content-type") contentType: "application/xml";
+    @body body: SimpleModel;
+  } | XmlError;
 }