SAP ABAP Message Number O1 - 538 (O1) is used by

• Function Module (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	OIA_NETTING_DOC_ADD_CHANGE	Create Movement Based Netting	OIA	IS-OIL	IS-OIL
2	Function Module	OIA_UPDATE_EXG_ST_PRINT_REQ	Create/change Exchange Statement Print Requests	OIA	IS-OIL	IS-OIL