SAP ABAP Table SSPIRELHFD (SPI: relationship on header level) is used by

• Class (9)
• TTYP (1)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_SPI_CM_READER Method: READ_TECHNICAL_RELATIONS	Get Metadata	SPI21	BASIS	SAP_BASIS
2	Class	CL_SPI_CU_PROCESS Method: CHECK_CONSISTENCE	Process Data from Customizing	SPI2	BASIS	SAP_BASIS
3	Class	CL_SPI_OP_STANDARD Method: IF_SPI_OPERATOR~FIND_RELATED	SPI: standard field comparison	SPI3	BASIS	SAP_BASIS
4	Class	CL_SPI_OP_STANDARD Method: IF_SPI_OPERATOR~INIT	SPI: standard field comparison	SPI3	BASIS	SAP_BASIS
5	Class	CL_SPI_OP_STANDARD Method: IF_SPI_OPERATOR~RELATE	SPI: standard field comparison	SPI3	BASIS	SAP_BASIS
6	Class	CL_SPI_OP_STANDARD Method: IF_SPI_OPERATOR~SELECT_RELATED_RECORDS	SPI: standard field comparison	SPI3	BASIS	SAP_BASIS
7	Class	CL_SPI_OP_STANDARD Method: IF_SPI_OPERATOR~FIND_RELATED_RECORDS	SPI: standard field comparison	SPI3	BASIS	SAP_BASIS
8	Class	CL_SPI_OP_SYSTEM_EVENT Method: IF_SPI_OPERATOR~DESCRIBE_RELATED	Operator for System Events	SPI3	BASIS	SAP_BASIS
9	Class	CL_SPI_OP_SYSTEM_EVENT Method: IF_SPI_OPERATOR~SELECT_RELATED_RECORDS	Operator for System Events	SPI3	BASIS	SAP_BASIS