SAP Message BEF_GENERATOR253 - Interface function &2 for class &1 does not exist

Diagnosis Interface module &V2& stored in metadata for class &V1& does not exist. Interfaces for classes that have to be generated are generated usinginterface modules. The name of the interface module is stored inmetadata. System Response Class &V1& is not generated. Procedure Check whether the name of function module &V2& is correct. If the name of the function module is correct, check whether functionmodule &V2& exists. If the function module exists, inform your system administrator. If the function module does not exist, correct the entry in themetadata. Procedure for System Administration Check the application structure in Customizing in theCall BE Navigator activity.