Interfaces 

When you select an entry in the Modules table, the system fills the Interface table with the corresponding input and output parameters for that module.

When you select a dependent field in the Fields table, the system finds the module which determines the field and fills the Interface table with the corresponding input and output parameters for that module.

For example, the interface for the module SPFLI in the sample context DEMO_TRAVEL looks like this:

Module SPFLI is a database table in the ABAP Dictionary. The Parameters column contains its input and output parameters, and the Field name column contains the associated fields in the context. The direction of the arrow in the I/O column shows which parameters are input parameters and which are output parameters.