Developing
WSRP-Compliant Applications
This section provides guidelines for NetWeaver developers to create WSRP-compliant content, that is, content that can be deployed to a NetWeaver portal (producer) and shared with another WSRP-compliant non-SAP portal (consumer).
Developers should create portal (PRT) applications when developing WSRP-compliant content. Web Dynpro applications are not supported.

This section is not intended for developers generating content to be published by a non‑SAP portal producer.
For information
on consuming WSRP-compliant portlets from a non-SAP producer portal, see
'WSRP Application
Sharing' Mode. This functionality is offered as part of the federated
portal network capabilities of SAP NetWeaver.
In order to share content, a non-SAP consumer portal creates a proxy portlet, a kind of gateway, to a SAP NetWeaver iView on the producer, and then grants access to its users to the proxy portlet. When a user on the consumer portal makes a request for the proxy portlet, the proxy portlet in turn makes a request to the NetWeaver producer for the content, which is displayed to the user on the consumer portal.

More information: