FWSD &1 created for other business partner; excluded from change process

What causes this issue?

You have created a forwarding settlement document for a forwarding
order. You have created the settlement document for an unplanned
business partner. You then made a late change to the forwarding order.
You subsequently ran the <ZK>Creation and Posting of Forwarding
Settlement Documents</> function in the background. The function
executes the change strategy that you have specified for your forwarding
process.
You must manually enter the charge information in a forwarding
settlement document created for an unplanned business partner. Because
of this, the system excludes all the forwarding settlement documents for
the forwarding order from the automatic change management process.
The system enters a block reason for forwarding settlement document &V1&
, the forwarding settlement document of the unplanned business partner.

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?

For the forwarding settlement for the planned business partners, you
must navigate to the <LS>All FWSDs Blocked in Automatic Change Process
</>screen. You must choose the relevant forwarding settlement document
from the list, and choose <LS>Execute Strategy</>. The system then
includes the settlements in the change process.
For the forwarding settlement document for the unplanned business
partner, you must manually update and post the forwarding settlement
document.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.