---
title: "Cancel Simulated Incoming ACH Transaction"
method: POST
path: "/cancelSimulatedAchTransaction"
tags: ["Transaction Simulation"]
---

# Cancel Simulated Incoming ACH Transaction

`POST /cancelSimulatedAchTransaction`

## Request

- Base URL: `api-{corename}.{env}.gpsrv.com/intserv/4.0/` (relative, and the document’s source URL is not known)
- URL: `api-{corename}.{env}.gpsrv.com/intserv/4.0/cancelSimulatedAchTransaction`
- Auth: none declared

Use the Cancel Simulated Incoming ACH Transaction endpoint to cancel a simulated ACH transaction that you created with the Create Simulated Incoming ACH Transaction endpoint. Pass the `ach_transaction_id` that was returned in the response. You cannot cancel the transaction after it has been processed.

For instructions on using this endpoint, see <a href="doc:simulating-ach-transactions" target="_blank">Simulating Incoming ACH Transactions</a>.

[block:callout]

{
"type": "warning",
"title": "Warning",
"body": "This endpoint does not support XML responses. If you pass `response-content-type: xml`, it will be ignored."
}
[/block]

[block:callout]

{
"type": "warning",
"title": "Warning",
"body": "Do not use this endpoint in <<glossary:Production>>."
}
[/block]

## Request body `application/x-www-form-urlencoded`

- object
  - `apiLogin` string, required: Web service username, as provided by Galileo. Pattern: Max 50 characters Example: `"AbC123-9999"`
  - `apiTransKey` string, required: Web service password, as provided by Galileo. Pattern: Max 15 characters Example: `"4sb62fh6w4h7w34g"`
  - `providerId` integer, required: Galileo-issued provider identifier. Pattern: Max 10 digits Example: `9999`
  - `transactionId` string, required: A unique provider-generated ID to identify this API call. A UUID is preferred. Pattern: 60 characters or less Example: `"9845dk-39fdk3fj3-4483483478"`
  - `achTransactionId` integer, required: The ACH transaction ID to cancel, as returned by <a href="ref:post_createsimulatedachtransaction" target="_blank">Create Simulated Incoming ACH Transaction</a>. Pattern: Positive integer Example: 1152

## Response `default`

- object
  - `status_code` integer, nullable, required: The response status code. May return a string for some statuses.
  - `status` string, nullable, required: The condition of a process or response
  - `processing_time` number, nullable, required: The time elapsed in processing the transaction
  - `echo` object, nullable, required: A structure that contains transaction ID information
    - `transaction_id` string, nullable, required: An ID that represents an API transaction
    - `provider_timestamp` string, date-time, nullable, required: Store a related timestamp for reporting and troubleshooting purposes
    - `provider_transaction_id` string, nullable, required: Secondary transaction identifier (generated by a provider)
  - `system_timestamp` string, date-time, nullable, required: A system generated timestamp
  - `rtoken` string, nullable, required: A Galileo-generated ID used for tracking
  - `errors` string[]: A list of errors generated while the request was processed
  - `response_data` object, nullable, required: A structure for the response data. This endpoint does not return response data, so it will always be empty.

## Changes

- **2026-11-03** `1ede7567a879`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/galileo-ft/apis/program-api/changes/cancelSimulatedAchTransaction/post.md)

---

[API](https://skmtc.dev/galileo-ft/apis/program-api.md) - [All operations](https://skmtc.dev/galileo-ft/apis/program-api/llms.txt) - [OpenAPI document](https://skmtc.dev/galileo-ft/apis/program-api/revisions/1ede7567a879?raw)