We are planning a minor change to TestRail’s API. When TestRail 7.1 is released (no exact ETA just yet), any attachment IDs used in the TestRail API will change from from integers to strings (as UUIDs).
This change will affect API scripts which utilize attachments, or their IDs, but should only require minimal changes.
We recognize that it may take some time to adjust to these changes, which is why this change will be released with TestRail 7.1.
Please don’t hesitate to reach out to our support team at email@example.com with any questions.