The following error dialog comes up when trying to change FIPS-PIV format in a door.
FIPS-PIV card formats have controller scope, in other word, the selected FIPS-PIV format (FIPS_PIV_75, FIPS_PIV_Full_FASC-N etc) applies to all the doors in the controller, once you have selected a FIPS-PIV format at a door, you must select the same FIPS-PIV format for all other doors in the controller.
If the format has to be changed, you first need to de-select all the card formats on all the doors under the controller then re-assign the card formats.
Edit EVERY door in the controller and de-select all the card formats.
After all the doors have their formats de-selected, you'll then be able to re-assign the card formats.