We are now Upgrading FROM 22.214.171.124 To r12.1.3.
The 'Lot' field under Batch material Details -> Pending Product Lots is mandatory, Which is very bad for us.
Our Current (11i) business process for creating Product lots, is to 1st allocate the 'Lot', and later on allocate and complete the 'Sublots' within this lot.
The equivalent process in r12 should be: 1st allocate the 'Parent Lot', and later on allocate and complete the 'lots' within this Parent lot.
Question: Is there any way to set the 'Lot' field to be optional?
No this is not possible, since Parent lot is a subset of Lot in R12. Once you choose your item as LOT, then it is not possible to make as Optional.
Try to raise an SR for this, Oracle may provide some workaround for the same.