How to find the custom logic in Standard webdynpro component FPM_GAF_COMPONENT

Hi Friends,

I am creating shopping cart. while creating when I click on Order button it is giving the custom error message.

I have right clicked on order button and then clicked on more field help and find the webdynpro component name.

The webdynpro component name is FPM_GAF_COMPONENT.

I have checked the configurations for this component and find there is one custom configuration.

How to check this configuration and how to find the feeder classes and methods and other configured Components in this configuration.

Please help me how to find the logic for custom message in this configuration.

in which place I need to search for custom logic. in FPM_GAF_COMPONENT or in custom configuration.

Please help me.

Thanks

Nagireddy Alavala