03 inspection lots for co-products?

Greetings Experts,

How do I generate 03 inspection lots for co-products?

All master data and material master settings are correct. No 03 Inspection Lots generated.

I've tried adding the 03 to the Process Material but that generates an Inspection Lot for the Process Material only.

Has anyone found a solution for this? It's a critical requirement for the Client.

Regards,

Kathy