Code lists
- Action code (UNCL1229)
 - Action code (UNCL1229) for Order Change
 - Allowance reason codes (UNCL5189 subset)
 - Application Response type code (UNCL4343 Subset)
 - Boolean indicator (openPEPPOL)
 - Catalogue Action code, header level (openPEPPOL)
 - Catalogue Action code, line level (openPEPPOL)
 - Charge reason code (UNCL7161)
 - Clarification list identifier (openPEPPOL)
 - Country codes (ISO 3166-1:Alpha2)
 - Currency codes (ISO 4217)
 - Dangerous goods regulations code (UNCL8273)
 - Document name code, full list (UNCL1001)
 - Duty or tax or fee category code (UNCL5305)
 - Electronic Address Scheme (EAS)
 - ISO 6523 ICD list
 - Image code (openPEPPOL)
 - Invoice status code (UNCL4343 Subset)
 - Item type identification code (UNCL7143)
 - Measured attribute code (UNCL6313)
 - Measured attribute code for despatch advice (UNCL6313 Subset)
 - Mime code (IANA Subset)
 - Order Response type code (UNCL4343 Subset)
 - Order type code (UNCL1001 subset)
 - Packaging level code (GS1 7009)
 - Price type codes (UNCL5387)
 - Transport service priority code (UNCL4219)
 - Recommandation 19 (UN/ECE)
 - Recommendation 20, including Recommendation 21 codes - prefixed with X (UN/ECE)
 - Recommandation 21 (UN/ECE)
 - Status Clarification Action (OpenPEPPOL)
 - Status Clarification Reason (OpenPEPPOL)
 - Status reason code (openPEPPOL)