SAP ABAP Table FLD_ID (Field Identifier) is used by

• Function Module (4)
• Program (3)
• Table (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	STRUCTURE_EDIT HIDDEN_FIELDS STRUCTURE FLD_ID OPTIONAL	Generic structure editor	S_DX_WB	BASIS	SAP_BASIS
2	Function Module	STRUCTURE_EDIT READ_ONLY_FIELDS STRUCTURE FLD_ID OPTIONAL	Generic structure editor	S_DX_WB	BASIS	SAP_BASIS
3	Function Module	STRUC_EDIT_WRAPPER_IDOC_ALE READ_ONLY_FIELDS STRUCTURE FLD_ID OPTIONAL	STRUC_EDIT_WRAPPER_IDOC_ALE	S_DX_WB	BASIS	SAP_BASIS
4	Function Module	STRUC_EDIT_WRAPPER_IDOC_ALE HIDDEN_FIELDS STRUCTURE FLD_ID OPTIONAL	STRUC_EDIT_WRAPPER_IDOC_ALE	S_DX_WB	BASIS	SAP_BASIS