SAP Message PT_TMW_FLD_SEL_CUST013 - Interface &2 does not exist

Diagnosis
The system searched for all classes implementing the interface &v2& forfield catalog &v1& in the PT_FIELD_TAB_GET function module. However,interface &v2& does not exist.

Procedure
Check the definition of the field catalog &v1& in the V_PT_FIELD_CATview as well as the definition of the interface &v2&.