Use DO Container Delete/Archive (12.19.22) to delete and archive unused container records when they are no longer needed. An unused container is one that is no longer linked to another container or shipper. When you have many unused containers, you may run out of container IDs.

You cannot use this program to delete a container that is currently linked, either to another container or to a shipper record. To delete specific linked containers, use DO Container Maintenance (12.19.3) for type S (shipper) containers

You can select unused container records by site or container number. You can also choose to remove any container structure associated with an unused container.