The issue came from the processing of the work for a released sales order line.
The sales order line was released from the Load Planning workbench page (mi=WHSLoadPlanningWorkbench), with the creation of a new load. The load was then released to the warehouse in the same page (WHSLoadPlanningWorkbench.PostLoad).
The created work has the first PICK line related to a specific work class, which its mobile device menu item has the flag "Allow over pick" activated.
For the item that was just released, the sales overdelivery field is configured in the item master data for the maximum of 100000% (EcoResProductDetailsExtended.OverDeliveryPct), to allow for high deviations from the original value in the overpicking command.
The field in the sales order line (SalesTable.OverDeliveryPct) follows the same fashion, being set at 100000%.
The problem comes when it is sought to execute the overpick command, while defining any quantity that is superior to the quantity proposed by the sales order, and that is inferior to the item's overdelivery percentage. The system gives the error "Overdelivery of line is XXX percent, but the allowed overdelivery is only 0,00 percent.", though the allowed sales Overdelivery for the item is higher than 0 percent.
Would you happen to know if I should be missing a specific setup in the system to allow for the item's overdelivery?