Ship-to-party for delivery missing

What causes this issue?

The data to create the outbound delivery is incompete. It is not
possible to determine the ship-to-party.

System Response

It is not possible to create the outbound delivery.

How to fix this error?

The ship-to-party is the same as the 'customer number of business
partner'. Maintain the customer in the vendor's master data.

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.