SAP Function CF_CK_FHMNR_EXT - PRT number filled correctly according to PRT category?

Parameter Reference Type Length Default Optional Text
FHMAR_IMP TCF02-FHMAR C 1 Production resources category
RCFKY_IMP RCFKY u 103 PRT: Key fields

Parameter Reference Type Length Text
RCFKY_EXP RCFKY u 103 PRT: Key fields

Exception Text
WRONG_FHMAR Production resources category not
WRONG_FHMNR Key fields not filled correctly