SAP ABAP Table WBB_MATKL (Material group list) is used by

• Function Module (2)
• TTYP (1)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	TTYP	WPOS_MATKL_TTY	WPOS_MATKL_TTY	WPOS	APPL	SAP_APPL