SAP ABAP Message Number IS - 139 (IS) is used by

• Function Module (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	ALM_ME_EQUI_SERNR_CHECK	Prüfen der Equipment / Serialnummer	ALM_ME	PI_APPL	SAP_APPL
2	Function Module	MSAM_MO_EQUI_SERNR_CHECK	Check the Material/Serial Number against Equipment	MSAM_MO	PI_APPL	SAP_APPL