The best way is to have the approved alternate item appear on the Bill of Material just after the standard item with a zero required quantity. Now the alternate item will appear on the Shop Order. So, if the standard item is not available, the alternate item can be issued to the shop order.

When the shop order is closed out, one item will have an unfavorable variance while the other shows a favorable variance. This is an easy way to provide alternate items provided engineering approves and they are part of the Bill of Material.

If Location Control is turned on in Baan IV, then inventory should never be negative.

If Location Control is not turned on in Baan IV, and the parameter “Negative Inventory Allowed” in INV Parameters is set to “NO”, then inventory should never be negative.

In Baan V and LN, the parameters in Inventory Handling Parameters determine whether you can have negative inventory. If these parameters are set to “NO”, then inventory should never be negative.

When to use a user defined inventory transaction

ERP LX (BPCS) provides you with the flexibility to create inventory transactions without program modifications. The typical transaction types are defined with effects set on how the transaction will impact inventory balances.

Perhaps you want to process a customer return and don’t want to the inventory to be impacted. You can create a user define transaction effect to allow the customer receipt and not update the inventory balance.