Collective order with manual good receipt

Dear all,

I have a very specific demand from my Customer, and I need your help.

My Customer is working in food industry and uses Collective Order from their production planning process.

This solutions helps them to plan and Schedule their orders, they dont need to create, and release orders one by one, etc...

BUT once the release is done,  they would need to "come back" to a manual good receipt for each level of the collective order.

Do you have a solution ? The co-product declaration (531) does not respond to their need.

Considering that a standard SAP solution does not exist, which specific would you advise ?

Thanks a lot for your support.

Pierre