SAP ABAP Message Number M2 - 552 (M2) is used by

• Function Module (3)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	MC_JOBNR_ENQUEUE	Block TMCSD-JOB LIS-JOB number	MCS	APPL	SAP_APPL
2	Function Module	MC_LIBNR_ENQUEUE	Block TMCSD-LIB LIS library number	MCS	APPL	SAP_APPL
3	Function Module	MC_VARNR_ENQUEUE	Block TMCSD-MCVAR LIS variable number	MCS	APPL	SAP_APPL