In some business scenarios being able to generate tracking numbers on different Production status change, for instance, Release o Start.

By default, tracking numbers are generated on the production order creation or when it's reported as finished.

We need serial numbers at the begining because we put stickers with information on places that are innaccessibles when the good is finished.

In our case, in order to track correctly the BOM of our products (due to version changes), we need to generate (reserve) new Serial numbers at the begining of the Production order. That allows us to control from which serial number has been implemented the version change.