The data on the invoicing currency shall be derived, if applicable, from the customs declaration and coded as follows:

• 0

  where the currency is indicated in the national currency F1...,

• 1

  where the currency is indicated in euro,

• 2

  where the currency is indicated in US dollars,

• 3

  where the currency is indicated in a currency other than the national currency F1..., euro or US dollars.