When I use PACE to assign an MGT/RocketIO pin, I receive the following error message:
"ERROR: <signal>: The bank number specified does not exist"
An MGT/RocketIO pin cannot be directly assigned in PACE. Only the instance of the MGT can be placed in an MGT location using PACE. This means that there has to be an MGT instantiated in the design for the MGT placement. The implementation tools will automatically know which pins are to be assigned, based on this location assignment.