Dealers don't order FECs, they order activation documents/activation information. Once entered within ODIS, the information is sent to the mothership and it's then determined if the license information is applicable to the vehicle.
If the license information is applicable, the mothership generates a FEC, transfers to the module and then performs the basic setting along with any configuration changes. The information is then recorded against the vehicles build data and the relevant PR code(s) are changed.