SAP ABAP Interface IF_SIW_READER_FACTORY (Access to FM and related readers) is using

• Interface (3)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_SIW_BAPI_READER	Reads and returns BAPI FMs
2	Interface	IF_SIW_DDIC_READER	Reads and returns DDIC types
3	Interface	IF_SIW_FM_READER	Reads and returns signature of a FM