Unable to import WSDL, if it contains import of external schema definitions (error: "The element or type could not be found undefined") · Issue #10588 · postmanlabs/postman-app-support · GitHub
Postman tutorials - SOAP API testing | WSDL Web services with postman | SOAP API test with Postman - YouTube
How to import the WSDL of a SOAP Web Service in Postman | by Valentin Despa | APIs with Valentine | Medium