SAP ABAP Message Number MSG_CL_ER - 172 (MSG_CL_ER) is used by

• Class (3)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_SR_INBOUND_CLASSIFICATION Method: CHECK_CONSISTENCY	Services Registry : Classification of an object	SUDDICLIENT_NEW	BASIS	SAP_BASIS
2	Class	CL_SR_INBOUND_CLASSIF_HANDLER Method: IF_SR_INBOUND_CLASSIFIED~UPDATE_OBJECT_CLASSIFICATION	Services Registry : Handler for classifications of objects	SUDDICLIENT_NEW	BASIS	SAP_BASIS
3	Class	CL_SR_INBOUND_CLASSIF_HANDLER Method: ENSURE_CLASSIFICATION_KEYS	Services Registry : Handler for classifications of objects	SUDDICLIENT_NEW	BASIS	SAP_BASIS