From outbound documents for item-tracked items, such as sales orders or production component lists, you can reserve specific serial or lot numbers. This may be relevant, for example, if you need production components from a specific lot to ensure consistency with earlier production batches, or because a customer has requested a specific serial number.
This is referred to as a specific reservation, because you reserve from the quantity of Item X that belongs to Lot X. If you simply reserve from quantities of Item X, then it is a normal, non-specific, reservation. For more information, see How to: Reserve Items for Sales Lines.
The following procedure is based on a sales order.
To reserve a specific serial or lot number
- In the Search box, enter Sales Orders, and then select the related link. 
- Create a sales order line for an item-tracked item. - Proceed to assign serial and lot numbers to the sales order line. 
- On the Lines FastTab, choose Line, and then choose Item Tracking Lines. 
- In the Serial No. field, enter SN1, in the Lot No. field, enter LOT1, and then enter 1 in the Quantity (Base) field. 
- Close the Item Tracking List window. 
- On the sales order, on the Lines FastTab, choose Functions, and then choose Reserve. 
- Choose the Yes button to reserve specific serial or lot numbers. 
- In the Item Tracking List window, select the serial and lot number combination that you have just assigned. 
- Choose the OK button to open the Reservation window showing only supply with the specified item tracking number. If there are any non-specific reservations on any of the item tracking numbers that you have specified for this line, you are informed of the quantity that has already been reserved. 
- On the Actions tab, in the Functions group, choose either Auto Reserve or Reserve from Current Line to create the reservation on the specific item tracking numbers. 
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| For more information about how to work with fields and columns, see Work with Data. For more information about how to find specific pages, see Search. | 





