Unit Codes

UN/ECE Recommendation 20 unit codes for ZUGFeRD invoices.

Common Unit Codes

Code	Description	Use Case
`C62`	One (piece/unit)	Products, licenses, subscriptions
`HUR`	Hour	Consulting, development time
`DAY`	Day	Daily rates, rentals
`MON`	Month	Monthly subscriptions, retainers
`ANN`	Year	Annual licenses
`KGM`	Kilogram	Weight-based pricing
`MTR`	Meter	Length-based pricing
`LTR`	Liter	Volume-based pricing
`MTK`	Square meter	Area-based pricing
`SET`	Set	Bundles, packages

Usage Example

{
  "items": [
    {
      "description": "Software Development",
      "quantity": 40,
      "unit": "HUR",
      "unit_price": 120.00,
      "vat_rate": 19
    },
    {
      "description": "Annual License",
      "quantity": 1,
      "unit": "ANN",
      "unit_price": 299.00,
      "vat_rate": 19
    },
    {
      "description": "USB Cables",
      "quantity": 10,
      "unit": "C62",
      "unit_price": 5.99,
      "vat_rate": 19
    }
  ]
}

Default Unit

If you don't specify a unit, the API defaults to C62 (piece/unit).

Full Reference

For a complete list of UN/ECE Recommendation 20 codes, see the official UNECE documentation .