SAP ABAP Message Number EC - 311 (EC) is used by

• Function Module (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	RS_CUA_INTERNAL_MOD_VERS_CHECK	RS_CUA_INTERNAL_MOD_VERS_CHECK	SEUC	BASIS	SAP_BASIS
2	Function Module	RS_SCRP_EXT_RELEASE_UPGRADE	Customer Modifications to a Screen: Check Version and Update (if req.)	SCRP	BASIS	SAP_BASIS