The ProfileRequest handler is a service that returns a list of cXML request transactions that are handled by the supplier. Ariba Supplier OnRamp provides a default ProfileRequest handler (pub.ariba.supplier.handlerImpl:defaultProfileRequestHandler). It searches the Configuration module to determine which cXML request transactions are configured. It then returns a list of cXML request transactions handled by the supplier. You register defaultProfileRequestHandler from the Ariba Supplier OnRamp Configuration screen.