WebService Consumer end point alias


I have a WSDL shared by client. The request has to reach client via APIGtway. I have changed the soap:address location to point to APIGtway address (https).

I’m have created consumer end point alias for APIGtway URL. In the designer I’m trying to set the port alias for this consumer WSD.
When i click the drop down of port alias from the binders tab I’m unable to see the end point alias which I have set in IS Admin page.

Please advise. Attaching the screenshot of endpoint alias.