I have a problem with closing pull requests in Azure DevOps on-premises when they contain multiple checks. For pull requests with many policies attached for changes or validator groups, when closing the pull request, I receive the following errors.

When trying to close a PR that includes many attached policies for builds, I get the error
“Operation failed: policy name must be succeed to update develop. (403)”,

and for code reviewers policies, I receive the error:
“Operation failed: Required reviewers policy needs 1 approvals but it only has 0. (403)”.

If I disable some policies, I can close the PR, but then the build validation does not trigger and CI doesn’t check code. Sample PRs that I had trouble with had around 80 attached checks. Disabling some of them allowed me to close the PR.

How can I verify why I cannot have a large number of build validations or code reviewers attached?

My version of Azure DevOps is 19.225.34309.2 (AzureDevOps2022.1).

Screen with sample error below:

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I disable some policies in order to close PR. It is workaround. I would like to know what is a reason of that behaviour and how to repair it.