For sales org. & division & is not allowed

What causes this issue?

The error analysis of the defective record found an illegal assignment
of a division to a sales organization.

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?

If you no longer need this assignment, delete the line.
Otherwise, maintain the assignment of divisions to sales organizations
and then call this assignment again.

Error message extract from SAP system. Copyright SAP SE.