SAP ABAP Table TRTYPET (Name of valid link types) is used by

• Function Module (13)
• Program (15)
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#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Program	LBMENF01	Include LBMENF01	SESS	BASIS	SAP_BASIS
2	Program	LBMENTOP	Include LBMENTOP	SESS	BASIS	SAP_BASIS
3	Program	LSF30F01	allgemeine Formroutinen	SDFM	BASIS	SAP_BASIS
4	Program	LSFTX_NODEF00	Include LSFTX_NODEF00	SDFM	BASIS	SAP_BASIS
5	Program	LSHI2TOP	Include LSHI2TOP	SHI2	BASIS	SAP_BASIS
6	Program	LSHI3TOP	Include LSHI3TOP	SHI2	BASIS	SAP_BASIS
7	Program	LSHI4F02	Include LSHI4F02	SHI2	BASIS	SAP_BASIS
8	Program	LSHI4F03	Include LSHI4F03	SHI2	BASIS	SAP_BASIS
9	Program	LSHI4I01	Include LSHI4I01	SHI2	BASIS	SAP_BASIS
10	Program	LSHI4O01	Include LSHI4O01	SHI2	BASIS	SAP_BASIS
11	Program	LSHI4TOP	Include LSHI4TOP	SHI2	BASIS	SAP_BASIS
12	Program	LSHI6F02	Include LSHI6F02	SHI1	BASIS	SAP_BASIS
13	Program	LSHI6I04	Include LSHI6I04	SHI1	BASIS	SAP_BASIS
14	Program	LSHI6TOP	Include LSHI6TOP	SHI1	BASIS	SAP_BASIS
15	Program	SAPLSHI4	Maintenance of Node Types and Link Types	SHI2	BASIS	SAP_BASIS