Not permitted personnel actions

What causes this issue?

The personnel number you are currently processing is flagged in table
T77INT. The current personnel action &V1& does not correspond to the
preselected action &V2&.

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?

Execute the preselected action &V2& in table T77INT for the personnel
number in question in order to delete the selection.

Error message extract from SAP system. Copyright SAP SE.