MSIR.0793 Inconsistent (what) in class header

A Class statement for a previously declared class had an attribute inconsistent with a previous declaration. Currently, this message is only used for the RequiredSuffix parameter, so it indicates that the required suffix specified in the class definition continuation did not match that on the original definition.

Likely causes of this are typos in the class name or RequiredSuffix value. One way to avoid the latter problem is to simply not specify the RequiredSuffix parameter on any but the first class block for the class — that is the only place it's required.