Nothing for ordering, or purchase order has already been created

What causes this issue?

You do not have to create a purchase order, as an order quantity of 0
has been entered for all additional items or purchase requisitions.

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?

No specific action is required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.