Credit memo qty greater than returned qty

What causes this issue?

You are entering a credit memo for an order item that is flagged as a
returns item. The quantity for which you are entering the credit memo
is smaller than the difference of the quantity returned so far and the
credit memo quantity so far.
INCLUDE MM_IV_MELDUNGEN OBJECT DOKU ID TX

System Response

The system has determined that the product of <ZG>(quantity to be
credited - credit memo quantity) * order price</> is greater than the
tolerance limit set in Customizing for quantity variances.

How to fix this error?

Check your entries and make any necessary corrections.

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.