.. _version_history_1.37.0:

1.37.0 (Pending)
=================





Minor behavior changes
----------------------

*Changes that may cause incompatibilities for some users, but should not for most*



* **ext_proc**: Use one of a hard-coded set of error messages when a :ref:`HeaderMutation
  <envoy_v3_api_msg_service.ext_proc.v3.HeaderMutation>` fails. Removing
  request-specific details allows grouping by similar failure types. Detailed
  messages remain available in debug logs.