generated: '2026-08-23'
method: searched
source: https://docs-v2.interchecks.com/docs/documentation-updates
title: Documentation Updates
scope: documentation
scope_note: >-
  This is a documentation changelog, not an API release log. Interchecks publishes no versioned
  API release notes, no RSS/Atom feed and no per-release version numbers; entries are dated to
  the month and describe what changed in the reference material, which in practice tracks when
  capabilities shipped.
scheme: year-month
current_version: v2
entry_count: 10
entries:
- date: '2026-01'
  highlights:
  - Added Test Data scenarios for INSTANT_FUNDING transactions
  breaking: false
  additions: true
- date: '2024-05'
  highlights:
  - API Test Harness calls updated to include Account status workflows
  - Auto-linking of a Plaid account bypassing the Plaid Link UI
  breaking: false
  additions: true
- date: '2024-01'
  highlights:
  - Card Account workflows for API and Widget now include Payment Account Validation based on client configuration
  breaking: false
  additions: true
- date: '2023-09'
  highlights:
  - ACH Funding updates for ACH Funding Plus, Retries, Refunds
  - About Transactions lists specific error codes for ACH Funding and Refunds
  - Added Update Transaction endpoint to cancel ACH Funding transactions in Processing or Retry status
  - Transaction Webhook schema updated to reflect latest payload details
  breaking: false
  additions: true
- date: '2023-08'
  highlights:
  - ACH Funding Guide published
  - Webhook Guide updated for Bank Account and Card Account notifications
  - Create Transaction page updated with ACH Funding samples
  - Create Transaction page updated with transaction_id parameter in certain error response scenarios
  - Create Bank Widget page added with request and response samples
  - ACH Return Codes page added
  - API Error Codes updated with latest error codes
  breaking: false
  additions: true
- date: '2022-12'
  highlights:
  - Webhook payload documentation update for the webhook_type value
  breaking: false
  additions: false
- date: '2022-10'
  highlights:
  - Reporting endpoints for OCT (Instant Deposit)
  - Prepaid account creation and management
  - Widget endpoints
  breaking: false
  additions: true
- date: '2022-04'
  highlights:
  - Card account conflict added
  - Webhook origin IPs added
  - API Error Codes updated
  breaking: false
  additions: true
- date: '2021-11'
  highlights:
  - Documentation published
  breaking: false
  additions: true
recent_spec_activity:
- observed: '2026-08-18'
  detail: >-
    The published OpenAPI document payments-api-v2-1.json carries updated_at 2026-08-18 and the
    About Transactions / Update Transaction reference pages carry updatedAt 2026-08-18, so the
    contract is being actively maintained even though no release entry was written for it.
  source: https://docs-v2.interchecks.com/reference/update-transaction
- observed: '2026-08-19'
  detail: The API Error Codes page carries updatedAt 2026-08-19.
  source: https://docs-v2.interchecks.com/docs/api-error-codes