The country ISO code of your own IBAN number 'XXXXXXX' is different from the execute country ISO code 'XX'

This error means that the letters in the beginning of your own IBAN number do not match the country code  from where you are trying to pay out the money.

This could be that you are trying to make a payment file for a Danish bank, but your own IBAN number is stated as a Swedish IBAN number.

Do you need some help, you can always raise a support case here