Horses entering CVI 3* or a CVI outside of Canada must have an FEI Passport. Horses must be micro chipped in order to recieve the Passport and FEI ID number. The FEI passport currently costs $348 and you can apply for it here:
Canadian Horses entering a CVI 1,2* in Canada require an FEI ID Number, and a Canadian EC National Passport. Horses require a micro chip for the FEI ID Number. The EC National passport costs $150 and you can get the application here:
All horses entering a CVI must have all their vaccinations up to date and entered into their relevant passport.