Activity & not included in the settlement

What causes this issue?

You are using activity &V1& to carry out settlement. This activity is
not currently supported.

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?

Correct the activity. If you have not yet entered this
activity, notify your system manager.

Error message extract from SAP system. Copyright SAP SE.