ISO 4217 / SPECIAL CODES
The codes assigned for transactions where no currency is involved
XXX
The ISO alphabetic code is XXX. Its three-digit numeric code is 999. No numeric minor-unit precision is assigned.
- Alphabetic code
- XXX
- Numeric code
- 999
- Symbol (English)
- ¤
- Decimal places
- Not applicable
A CODE IN CONTEXT
Its listed entities.
Country and entity associations in the current ISO reference.
No Currency
WRITING AN AMOUNT
XXX, without ambiguity.
XXX has no applicable numeric minor-unit precision in the source. It is included for reference and is not offered as an invoice currency in this tool.
The English narrow symbol shown here is ¤. A symbol alone may not uniquely identify a currency.
Source & definitions
Currency code, numeric identifier, name, decimal precision and entity associations: SIX ISO 4217 List One, published 2026-09-17. Symbols use English-locale number-format data. Country links connect the listed entities to Ostro’s geographic reference directory.
How to read currency codes ↗