Best practice on calling SFC500 from a custom program - 405CD

This is a little involved so I'll try to keep it brief. I have recently implemented an EDI 866 processing program which basically creates an order for a one-off, unique item tied to a unique serial number. The manual way that something like this is currently handled is that a query is used to select inventory items that have a on hand quantity of zero with an outstanding order for an item. Then the Shop Floor Order program is called (SFC500) and the shop order entered.

With this 866 record, I need to link the unique serial number of the ordered item to the shop order. The only way I can think to do this would be to pass that serial number into the program, but I am not familiar enough with SFC500 to know what the best approach would be. The reason I need the shop floor order and the serial number linked is that the traveler and the packing list need to carry the serial number as well.

Currently I have written a program that will display the 866 orders that have not yet been processed and do not have a current shop floor order for the item. I'd like to call SFC500 from my program, passing the serial number and maybe the order number to the SFC500 program. Or, be able to retrieve the shop order number once the shop floor order program has completed.

For those of you who might have done something similar in version 405CD of BPCS, any pointers or suggestions on how to accomplish this in the most expedient fashion?

Thanks,