Field overflow in net price calculation (check entries, item &)

What causes this issue?

The <GL:net_price>net price</> is too long.

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?

Correct the <GL:condition>conditions</> for item &V1&.

Error message extract from SAP system. Copyright SAP SE.