Monaco seems to be a special case inside FR.
Not sure if it should be added to the FR validation or directly to MC or both.
From wikipedia:
Although an independent country, Monaco is part of the French postal code system as if it were a French department, numbered, with codes consisting of 980 and two digits, with 00 being used for deliveries to all physical addresses in the Principality, and 01 to 99 being used for special types of delivery.[3] However the destination country on inbound mail must be specified as "Monaco", not "France".
Monaco seems to be a special case inside FR.
Not sure if it should be added to the FR validation or directly to MC or both.
From wikipedia: