Checkmk Werk 15595: aux_tag: editing a builtin aux tag is not allowed

ID: 15595 Title: aux_tag: editing a builtin aux tag is not allowed Component: REST API Level: 1 Class: Bug fix Version: 2.3.0b1 This werk addresses an issue when trying to edit a builtin auxilliary tag. Previously this would cause a 500 Internal Server Error. With this change we now return a 404 response with an appropriate error message.