Need explanation on the Supplier lot number in the PO receipts

Hi,

I'd like to know the use of supplier lot number field under the PO receipts. Is it used with in connection with other module or functions (e.g. lot number)?

I tested it but I cannot see it in the on-hand availability. Though, it is populated to the receiving transactions summary and material transactions. Our items are not lot controlled.

Appreciate any inputs please.

Thanks,

Lynnette