Delivery items could not be created (see log)

What causes this issue?

The system checked the items in the sales order, according to the
selection criteria that you entered. It found no deliverable items.
Possible reasons are:
The item or items in the sales order are not relevant for delivery
(this would apply, for example, to text items)
There are no <GL:schedule_line>schedule lines</> due for delivery up to
and including the selection date
The <GL:shipping_point>shipping point</>) that you entered is different
from the shipping point(s) specified for the item(s) in the sales
order.

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?

Review the selection criteria and, if necessary, enter new values. You
can also check the incompletion log for information about missing data.

Error message extract from SAP system. Copyright SAP SE.