added

June 27, 2025

New Account Type Field for ATM Transactions
Release date: July 1, 2025
Impact: New field added to ASA requests and Transaction events providing account type visibility for ATM transactions
Audience: All customers
Action required: None, this change is additive only
Products affected: ASA and Transaction APIs

Overview

The new account_type field included in transaction data shows which account (checking, savings, etc.) cardholders select at ATMs. This enables accurate decline messages and account-specific authorization decisions, avoiding confusing generic errors when cardholders select accounts not linked to their card.

Details

The new account_type field appears at the root level of ASA and transaction event objects for ATM transactions only (withdrawals, deposits, balance inquiries). The field is null for point-of-sale transactions.

Values:

  • DEFAULT - The cardholder's default account when they don't select a specific account or the ATM doesn't offer account selection
  • CHECKING - Checking account when the cardholder selects "Checking" at the ATM
  • SAVINGS - Savings account when the cardholder selects "Savings" at the ATM
  • CREDIT_CARD - Credit card account when accessing available credit
  • null - No account type specified for non-ATM transactions or when account type cannot be determined

Example: ASA Request with Account Type

{
  "merchant": {
    "acceptor_id": "333301802529120",
    "descriptor": "ATM WITHDRAWAL",
    "mcc": "6011"
    // ... other merchant fields
  },
  "card": {
    "token": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "last_four": "1234"
    // ... other card fields
  },
  "account_type": "SAVINGS",  // New field
  "amount": 10000,
  // ... additional required fields
}

Release Timeline

  • Production: Tuesday, July 1st, 2025

User Impact

This change is additive only and doesn't require modifications to any existing integrations.

Updated Documentation

Visit our API Reference for integration details.

Contact us via HELP in your Lithic Dashboard with questions.


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