diff --git a/docs/csharp/language-reference/compiler-messages/cs8355.md b/docs/csharp/language-reference/compiler-messages/cs8355.md
new file mode 100644
index 0000000000000..e428f90d5c007
--- /dev/null
+++ b/docs/csharp/language-reference/compiler-messages/cs8355.md
@@ -0,0 +1,35 @@
+---
+description: "Compiler Error CS8355"
+title: "Compiler Error CS8355"
+ms.date: 12/10/2023
+f1_keywords:
+  - "CS8355"
+helpviewer_keywords:
+  - "CS8355"
+---
+# Compiler Error CS8355
+
+An in parameter cannot have the Out attribute.
+
+The parameter of a method can't be declared as read only, while informing interop marshaler to treat this parameter as writable by the native code.
+<br/><xref:System.Runtime.InteropServices.OutAttribute> will contradict to the `in` keyword when [marshalling](../../../standard/native-interop/type-marshalling.md).
+
+## Example
+
+The following sample generates CS8355:
+
+```csharp
+using System.Runtime.InteropServices;
+
+class Program
+{
+    public static void Example([Out] in int value)    // CS8355
+    {
+    }
+}
+```
+
+## See also
+
+- [Default Marshalling Behavior](../../../framework/interop/default-marshalling-behavior.md)
+- [Reference parameters](../keywords/method-parameters.md#reference-parameters)
diff --git a/docs/csharp/language-reference/compiler-messages/toc.yml b/docs/csharp/language-reference/compiler-messages/toc.yml
index 469d80e7a4b36..23c400d40f763 100644
--- a/docs/csharp/language-reference/compiler-messages/toc.yml
+++ b/docs/csharp/language-reference/compiler-messages/toc.yml
@@ -1608,6 +1608,8 @@ items:
     href: cs8334.md
   - name: CS8354
     href: cs8354.md
+  - name: CS8355
+    href: cs8355.md
   - name: CS8403
     href: cs8403.md
   - name: CS8410
diff --git a/docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md b/docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md
index 83a33773c430b..a88eac6e22c36 100644
--- a/docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md
+++ b/docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md
@@ -329,7 +329,6 @@ f1_keywords:
   - "CS8349"
   - "CS8350"
   - "CS8353"
-  - "CS8355"
   - "CS8356"
   - "CS8357"
   - "CS8359"