Cannot create Azure DevOps Service Connection: fields in the service connection are not expected: releaseUrl

Question

I am using the normal browser UI to create an Azure Service Connection (Azure Resource Manager using service principal (manual)). When I enter my data and click on "verify" it says: Verification Succeeded

But when I click on the button Verify and save it reports an error in red at the top:

Following fields in the service connection are not expected: releaseUrl. Only fields that are defined in the service connection's contribution type as inputs can be specified.

I can also select Save without verifiation in the button dropdown but the same error occurs.

There is no field "releaseUrl" on the form... so I guess this must be some bug in the backend/API?

Answer 1

I have entered now the same data again and the issue is gone. Apparently this was some issue that existed probably for a few hours..

Answer 2

As per @Heinzlmaen's comment, simply refreshing the page and starting again fixed it for me.

The only difference in the data between my two attempts was to change the name I gave the service connection to have spaces instead of underscores, but I very much doubt that was what cured it.