On the API: Please refer to the API changelog On the app: Select More on Trading page > Select Settings > Select USD-M settlement currency Select More and Settings under Features selection USD-M settlement currency is under Trading mode option on the app's settings menu On the web: Select Settings on Trading page > Select USD-M settlement currency USD-M settlement currency is under Settings option on the web's menuWhat happens if I use a different settlement currency than my counterparty?

For Spanish nationals (individuals): Format = 8 digits + 1 letter Example: 12345678A For foreign individuals (NIE): Format = Letter (X/Y/Z or M) + 7 digits + control letter Example: X1234567T or M1234567A Found on ID, driver license, or Resident Permit.