
In the Form Builder (transaction SFP) you can define a handler for inbound processing in order to process PDF forms completed offline and sent to an e-mail address configured in an SAP system.
This scenario is also supported by the Web Dynpro ABAP framework. If an inbound processing handler is available for the form to be displayed in a Web Dynpro application, Web Dynpro runtime generates all the necessary information in the form data of the form, so that the inbound processing handler can be called when the e-mail is received.
See also the system documentation for interface IF_FP_OFFLINE.
You can find an example in the system in the DEMO_IFBA_EMAIL component.