Hi,
Interface IF_RSROA_VARIABLES_EXIT_BADI is used in standard SAP BAdI RSROA_VARIABLES_EXIT_BADI as part of Enhancement Spot RSROA_VARIABLES_EXIT. In method PROCESS class-based exception CX_RS_ERROR is defined.
So you have to replace statement RAISE NO_PROCESSING by:
RAISE EXCEPTION TYPE CX_RS_ERROR.
Best regards,
Sander