Data Types
String, integer, date, currency, and other valid data types and formats.
Merchant Registration ID Types
Country-specific registration IDs (UEN, ACN, EIN, etc.) and their formats.
Dispute Reason Codes
Reason codes for Visa, Mastercard, Amex, Discover, Diner’s, JCB, and UnionPay.
Merchant Category Codes
ISO 18245 MCC reference — searchable and filterable.