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When using this functionality for registering serial numbers, and the serial numbers are known, it is recommended that a GroupOrderLine is added. The GroupOrderLine should not have an expected serial number set, as that will prevent other serial numbers from being registered.
Limitations
Order line grouping does not support Tote functionality, and should therefore not be used where totes are needed.
The reason for that is that the grouped order line uses the destination from either the <GroupOrderLine/> or the first <BaseOrderlins/>, and will therefore link all registrations to that destination.