No schedule lines due for delivery up to the selected date

What causes this issue?

There are no <GL:schedule_line>schedule lines</> due for the given
order item up to the date chosen.

System Response

The system does not create a delivery item for this order item.

How to fix this error?

Check whether the order item to be delivered contains confirmed
schedule lines.
If this is the case, set the selection date further into the future if
you still want to create a delivery for this item.

Error message extract from SAP system. Copyright SAP SE.