SAP ABAP Table UCU_ACC_SCR_SUBST_F4 (Account Screen: F4 Help for Substitution) is used by

• Program (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Program	LUCU1FCL	Include LUCU1FCL	UCU1	SEM-BW	SEM-BW
2	Program	LUCU1FCN	Include LUCU1FCN	UCU1	SEM-BW	SEM-BW