SAP ABAP Message Number UMB - 231 (UMB) is used by

• Class (1)
• Function Module (2)
• Program (6)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_UMB_VALIDITY_SERVICE Method: PERIOD_TAB_CHECK	Process Validity Data	UMB	SEM-BW	SEM-BW