Update sdk/core/azure-core/azure/core/tracing/opentelemetry.py

Co-authored-by: Copilot <[email protected]>

Author: pvaneck

sdk/core/azure-core/azure/core/tracing/opentelemetry.py

@@ -174,6 +174,8 @@ def set_span_status(span: Span, status: str, description: Optional[str] = None)
         :type description: str
         """
         status = status.upper()
+        if description is not None and status != "ERROR":
+            raise ValueError("Description is only valid when status is 'ERROR'.")
         if status == "OK":
             span.set_status(StatusCode.OK)
         elif status == "ERROR":