'Only Post Accruals Conditions' not compatible w/ business volume posting

What causes this issue?

If the settlement process category is <LS>Supplier Settlement List</>,
you cannot configure a business volume posting in combination with the
<LS>Only Post Accruals Conditions</> indicator.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.