Allocation buffersYou can use allocation buffers to allocate free, (unallocated) inventory if insufficient inventory is present. When you create an allocation buffer, free on hand inventory for a warehouse, item and, if present, an effectivity unit, is allocated to a specification. The inventory is then consumable for outbound order lines whose specification characteristics match those of the allocation buffer. Outbound order lines, advice lines, shipment lines, and so on, created in the outbound and shipment procedures obtain the specification characteristics of the demand order from which they originate. You can only create allocation buffers if the following applies:
Note Allocation buffers are generated based on a number group and series defined in the Inventory Planning Parameters (whinp0100m000) session. Calculating available unallocated inventory LN calculates the available unallocated inventory as follows: {A - (B + C + D)} + E = F If F > G, G = unallocated available inventory H - I = G
The committed inventory C and the location allocated inventory D can overlap, because if outbound advice is created for committed inventory, this advised committed inventory is listed as both committed and location allocated inventory. If C and D were subtracted from A to calculate F, the calculated free inventory F would be lower than the actual free inventory. Therefore, the inventory committed in process E is added to balance the result. If F is more than the difference between the Inventory on Hand field of the Inventory by Warehouse, Item and Effectivity Unit (whwmd2516m000) session and the Inventory On Hand field in the Inventory by Specification (whwmd2519m000) session, the result is adjusted to this difference. Creating allocation buffers Allocation buffers are created:
You can view allocation buffers in the Inventory Commitments (whinp2100m000) session. Creating allocation buffers in Enterprise Planning During an order planning run, Enterprise Planning can create allocation buffers to allocate inventory to a demand order. To allocate inventory:
Creating allocation buffers at sales order line
entry Allocation buffers can be created as follows from the Sales Order Lines (tdsls4101m000) session, or the Sales Order Planned Delivery Lines (tdsls4101m100) session:
Consumption of allocation buffers If outbound advice is created for an outbound order line with a specification, LN first advises the allocated- to inventory that was received by means of supply orders with matching specification characteristics, thus increasing the quantity in the Inventory Location Allocated field of the Inventory by Specification (whwmd2519m000) session. If this inventory is insufficient, LN advises inventory from allocation buffers with specification characteristics that match those of the outbound order line, thus increasing the quantity in the Inventory Location Allocated field and the Inventory in Allocation Buffer field of the Inventory by Specification (whwmd2519m000) session. Likewise, if outbound advice is released for an outbound order line with a specification, LN first releases the allocated- to inventory that was received by means of orders with matching specification characteristics. If the corresponding shipment lines are confirmed, the quantity in the Inventory Location Allocated field of the Inventory by Specification (whwmd2519m000) session is decreased. If this inventory is insufficient, LN releases inventory from allocation buffers with specification characteristics that match those of the outbound order line. If the corresponding shipment lines are confirmed, the quantity in the Inventory Location Allocated field of the Inventory by Specification (whwmd2519m000) session is decreased.
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