Dunning area & with dunning procedure & is defined for customer.

What causes this issue?

Dunning area & with dunning procedure & is defined for the customer.

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?

Select a different dunning area for the rental agreement to define a
new dunning procedure.

Error message extract from SAP system. Copyright SAP SE.