I have two devops accounts. In 1st account I configured a build pipeline for Azure Data Factory with the attached build.yaml132228-buildyaml.txt
I then copied the repo and the build yaml to the 2nd devops account.
In the 1st devops the build works ok. However, in the second, it fails at the validate step with:
throw "Execution failed with exit code: " + exitCode;
Execution failed with exit code: 255
This is documented in the attached log from the build (validatefail.txt).