BaseURL is not defined in the Jira Allowlist

Symptoms

When creating a new synchronization there is a validation error that is described as: "The base url %baseUrl% is not defined in the Jira Allowlist admin settings.” 

Cause

Due to security concerns, Backbone now enforces the Jira Allowlist.

This means that the Data Center instance now has to list each and every remote instance url which it is allowed to connect with.

Resolution

Follow these steps in order to either turn off the allowlist or add the base url of the remote instance.

1. Access the System settings by clicking on the settings icon in the top right corner

2. Click on Allowlist in the left sidebar menu

3. Inside the Allowlist configuration, either:

   1. Turn off the Allowlist

   2. Add a new wildcard expression with the baseurl of the remote instance in the following format:

      1. For Cloud: https://partner-cloud-instance.atlassian.net*

      2. For DC: https://partner-dc-instance.com*

   3. Enable the checkbox to allow incoming requests

4. In order to validate the changes, please use the URL validator in the top right corner to ensure that both outgoing and incoming requests are accepted.

After performing these steps, please refresh the page of the sync connection screen and re-enter the connection details. It should properly proceed without issues now.