Use own super classes

CLASS cx_fra_static_check DEFINITION ABSTRACT INHERITING FROM cx_static_check.
CLASS cx_fra_no_check DEFINITION ABSTRACT INHERITING FROM cx_no_check.

Consider creating abstract super classes for each exception type for your application, instead of sub-classing the foundation classes directly. Allows you to CATCH all your exceptions. Enables you to add common functionality to all exceptions, such as special text handling. ABSTRACT prevents people from accidentally using these non-descriptive errors directly.