Stock item autonumbering within a class

Hello,

A client requested autonumbering based on a inventory class.

I adjusted Segmented Key to include the inventory class as Segment 1 (AAA format) and defined its keys. Added Segment 2 as numeric (6 digits) for auto-numbering.

Also defined numbering sequence for the segment 2 and selected auto-number.

The issue I have is auto-numbering is not sequential within an inventory class.

So if I create item BBB<NEW> after AAA000001 it saves the item as BBB000002.

How that can be set up so the numbering is sequential in each Segment 1 value?

Best regards,

Mike