When creating record templates for customers, vendors and employees, it is not possible to edit the record template, and the user get's the error. Record template editing is not allowed for table with ValidTimeState enabled templates.

As customers/vendors/employees are the most common record types to has as a template, it makes no sense to block editing these record templates types, and I think an investment here would increase usage and reduce confusion.

See also https://fix.lcs.dynamics.com/Issue/Details?bugId=252760 originating from Ver 8.0