Currently, the purchase order line number field is not visible on the invoice lines in the supplier collaboration module. This is required by suppliers so they can validate and update invoice lines in comparision to the purchase order doucment they have received from the customer.

This is especially important in industries where product masters & variants are used such as retail. The display dimensions functionality is not avaiable on the invoice lines in supplier collaboration. This means dimensions such as size can't be added to the invoice lines as identifiers.

In Hunter Boots scenario, this has made it impossible for suppliers to tell the invoice lines apart as the same product master number is listed on multiple lines but the purchase order line number & size code fields are not visible. This issue has made the supplier collaboration invoicing functionality unusable, and will likely have to be descoped from implementation.