The class contains unknown comments which can't be stored.
Message type: E = Error
Message class: OO_SOURCE_BASED - WB - Class Builder - Messages for the source-b. Class Editor
Message number: 012
Message text: The class contains unknown comments which can't be stored.
What causes this issue?
You wrote a comment outside a method implementation or you commented a
whole method implementation. This is not supported.
System Response
The class has not been saved.
How to fix this error?
Please put all method comments into the method implementation between
the statements METHOD ... ENDMETHOD.
Procedure for System Administrators
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.