using logistic carriers already in sales order as "predicted value"

the reason for using logistic carriers in the sales order is, that the Customers which order products, need to have also the logistic carrier "prediction" on the sales order, otherwise the will not pay for it.

Currently: If you have a logistic carrier on a sales order, and you create a picklist. The System says. "Not enough free stock for this logistic carrier.

Prequesite: you only have stock on the Logisic Carrier bin. No other bin has logistic carriers stored.You have plenty of stock on it.

Sidenote: If you have some pieces on another bin (not LOGCAR), the error does not arrise and you can pick the logistic carriers. It would be good in General if the picklist also "allocates" and verifys stock on the LOGCAR bin, then it would work, to have logistic carriers already in sales orders and on picklists.