E1 9.1 Mexican Currency Code

Hi --

Our currency setup up for Mexico is MXN (ISO Standard) but I have found a document (Doc ID # 638224.1) that states "Mexican VAT will be applied when the transaction currency of the voucher/invoice is MXP, therefore, the Default Code field on the Vouchers tab of Supplier Master Revisions (P04012) should be set to MXP for those vendors who are always paid in Mexican Pesos."  do you have any idea if this will cause us issues in the long run if we are using MXN as our currency code?  Or does the document just need to be updated?

Thanks,