Cancel a pending ACH transaction.Ask AIpatch https://api.helcim.com/v2/ach/transactions/{transactionId}/cancelPath ParamstransactionIdintegerrequiredThe ID of the ACH transaction to cancel.Headersidempotency-keyuuidrequiredA UUID-formatted idempotency key. Accepted format is 25-36 alphanumeric characters (including '-' and '_').Responses 200The pending ACH transaction was successfully cancelled. 400Invalid request. Likely due to the ACH transaction not being pending. 403User does not have valid permissions. 500Unexpected internal error.Updated about 1 year ago