Use badi "MRM_HEADER_CHECK". The method "HEADERDATA_CHECK" contains parameter "I_RBKPV" which contains the required information at runtime. So, use it to carry out your validation.
Regards
Use badi "MRM_HEADER_CHECK". The method "HEADERDATA_CHECK" contains parameter "I_RBKPV" which contains the required information at runtime. So, use it to carry out your validation.
Regards