Polling for Updates

Swagger UI

You can view the full API documentation for ACH Transactions in our Swagger UI. This collection provides detailed information about all available endpoints, including request and response schemas, parameters, and examples.

Note

• ItemStatus – Filter for items that are in the blocked, invalid, and returned status.
• Return Date – Use a date range that typically goes back 3 – 4 business days. Make sure you use “Return Date” and not “Send Date”.

Danger

A common mistake is filtering on the wrong date field. When an item is blocked, invalidated or returned, the Return Date is set to the day of that event.

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Here is a little help with polling. We typically recommend polling a few times a day fetching. When an item is invalidated, returned, or blocked, the ReturnDate will match the Date the event occurred.

GET https://api-dev.flx-payments.com/api/v3/AchTransactions/companycode/
<yourCompanyCode>?itemStatus=B&itemStatus=I&itemStatus=R&page=0&pageSize=200&returnDateStart=2025-05-19T00:00:00.000&returnDateEnd=2025-05-22T00:00:00.000

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Open List of ACH Transactions in System

To view all ACH transactions in the system, use the following endpoint:

GET /api/v3/AchTransactions/companycode/{companyCode}

Get a Single ACH Transaction

To retrieve a specific ACH transaction, use the following endpoint:

GET /api/v3/AchTransactions/companycode/{companyCode}/{itemId}

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