Message Number list used by SAP ABAP Class CX_TMS_INVALID_EXTERNAL_SYSTEM (System cannot be managed externally in TMS)
SAP ABAP Class CX_TMS_INVALID_EXTERNAL_SYSTEM (System cannot be managed externally in TMS) is using
# Object Type Object Name Object Description Note
     
1 Message Number  PU - 634 Invalid or unknown system &1, client &2