When configuring the PM Integration with Jira, there can be an issue where the Ticket ID Pattern isn't correct and doesn't match the Jira tickets. If the Ticket ID Pattern isn't editable that is because PM Integration is enabled. To resolve it please follow the steps below:
- Disable PM Integration
- Make ticket ID mapping change
- Re-enabled PM Integration
NOTE: If you refer to ticket IDs under the PRs then the option "Map commit to Pull Requests Issues" is used for the PM integration to fetch it.