Quantity in &1 is &2 while the total returned quantity is &3

What causes this issue?

The total returned quantity with reference to the original requirements
document (for example, a plant maintenance order or a purchase
requisition) now exceeds the requirements quantity.

System Response

You are notified, but not prevented from creating return lines with a
total quantity exceeding the requirement quantity.

How to fix this error?

Acknowledge this message to continue. Update the requirements document
to avoid seeing this message if you create another return with reference
to the same document.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.