Document canceled under number &. Clear FI documents manually ( & & )

What causes this issue?

The invoice was successfully cancelled. However, the FI follow-on
documents will not be balanced automatically at the moment.

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?

You must balance the open supplier items manually.
<DS:TRAN.F-44>Execute function</>

Error message extract from SAP system. Copyright SAP SE.