Company code not determined for freight settlement document

What causes this issue?

You attempted to post freight settlement document &V1&. However, you
have not specified a company code for the posting. The system determines
the company code as follows:
From the relevant freight document
From the plant assigned to freight settlement document type &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?

Contact your system administrator.

Procedure for System Administrators

For a Transportation Management (TM) component posting to an internal MM
component, you must specify a plant in <ZK>Assign Purchasing Information
for Posting </>Customizing activity under <ZK>Transportation Management
-> Settlement -> Freight Settlement -> Integration for Settlement
Posting</>.
For a TM component posting to Materials Management (MM) in an external
SAP ERP or SAP S/4HANA system, you must specify a plant in the
<ZK>Assign Purchasing Information for Posting </>Customizing activity
under<ZK> Integration with Other SAP Components -> Transportation
Management -> Invoice Integration -> Invoicing -> Mapping of
Organizational Units</> in the external SAP ERP or SAP S/4HANA system.

Error message extract from SAP system. Copyright SAP SE.