Just ran into this and had First Data, PCCHarge and Nashville world support on teh phone…

When setting up PCCharge for FDCN (Nashville/Envoy) here is the way to do teh merchant number…


For the zeroes and MID, MID should be 6 or 7 digits. If it is 6, first zeroes you put 5 if 7 then you put 4 leading.

12/3/09 – clarification————————————
Four zeros + 7 digit MID + FOur zeros + 7 digit TID