What does the "One of the deployment parameters has an empty key" mean in VSTS ARM release

Question

My ARM template resource group deployment fails in VSTS.

I get an error without any specific reference to parameter that has an issue: "One of the deployment parameters has an empty key. Please see https://aka.ms/arm-deploy/#parameter-file for details."

The referenced url contain general information, with one comment asking the same question, but no answer to it. Person asking it alluded that it may have something to do with the version of the deployment step (2.*) and it not using Powershell anymore. I went though the template back and forth comparing parameters in BeyondCompare and nothing sticks out...

Does anyone know what does this error mean?

Answer 1

I had the same issue and found out that some parameters has a space in their values. So you should write -adminUsername "$(vmuser)". This works for me