This FAQ explains why the Entitlement Breakdown Report may show a "possible error" message and what to do next.
Microkeeper flags scenarios that can misalign leave balances.
Common causes include:
Do nothing immediately. Run your next scheduled payrun and recheck the report - most cases resolve automatically.
Balances often self-correct on the next payrun. For example, a -27 hours "Possible Error" paired with a +27 hours entry will cancel out, indicating the system has self-corrected.

First, check if this is your expected result. The "possible error" may be intentional based on actions you've taken.
For example, if you increased an employee's leave balance by 20 hours by editing an opening balance, and the report shows a +20 hours "possible error" on that payrun, this matches your expectation and can be safely ignored.
If the error doesn't match any action you've taken and you're not sure why it appeared, contact Microkeeper Support with the employee and report affected.