Prebooking exists for personnel number

What causes this issue?

A preselection exists for the current personnel number in table T77INT.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

To delete the preselection, the preselected personnel action &V2& must
be executed with the action reason &V3& on date &V1&.

Error message extract from SAP system. Copyright SAP SE.