Back-to-back actions do not turn blue

In my customers folder i want to make a back-to-back purchase or work order. Normally the options turn blue in the right pane, so that I can make the b-t-b order.

All the codes are correct for work order generation from the sales order. The work order can not be created from the sales order. The option Work order in the right pane does not turn blue, when creating the sales order. The only way now to make a b-t-b work order is via the function: FUNMAUTF  (manufacturing->Batch processes->Allocation/deallocation->back-to-back order). Selecting  the correct order or date. In the sales order appears the corresponding WO number.

Anybody an idea how I get the functions in the right pane working again??

Helene van Dijk
Deveho