Update Set movement

Hello,

I am attempting to transfer update sets from our development instance to the production environment. I have successfully captured and marked the local update set as complete. However, when I create a new connection in the update source and test the connection, I receive the following error: "Authentication to remote instance failed. Method Failed: Http:/ 1.1 401 unauthorized with code: 401." I am using my administrative credentials, which I use to log into ServiceNow, but the error persists.

Could you please assist me in resolving this issue?

Thank you.