The PunchOutSetupRequest is not sent to the Uniform Resource Locator (URL) specified in the published catalog file.

Each catalog file contains its own unique PunchOutSetupRequest URL for individual buyers, but all of the PunchOutSetupRequests route to one single URL, which is the PunchOutSetupRequest URL configured within my SAP Business Network account.

The PunchOut URL in the catalog file is only used for including the URL within the <SupplierSetup> element of the PunchOutSetupRequest when a user punches out to your site.

When the SAP Business Network sends the request to your organization, the system does a look up of the PunchOutSetupRequest URL configured in your account. Based on the current value of the URL, the SAP Business Network directs the PunchOutSetupRequest to that URL.

At one point, the SAP Business Network did send the PunchOutSetupRequest to the URL contained within the catalog file. For security purposes, this action was deprecated.

SAP Business Network for Procurement & Supply Chain > Catalogs > Catalog Publishing
SAP Business Network for Procurement & Supply Chain > Catalogs > Punchout Catalog