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The endpoint <code>POST /v1/integration-orders/{id}/recipients</code> adds one recipient to an integration order.

A duplicate recipient now returns HTTP 200. The order stays unchanged. The endpoint adds no second row. A duplicate is an exact repeat of a recipient already on the order.

Before this change the endpoint returned HTTP 422 with the reason code <code>DUPLICATE_RECIPIENT</code>. That reason code is no longer returned. It left the published 422 reason-code list.

You can treat a duplicate re-post as a success. Read HTTP 200 as accepted. A retry on a duplicate no longer fails.

The 422 response still rejects a recipient for these reasons:

<code>RETURN_ADDRESS_MISSING_FIELDS</code>

- <code>ADDRESS_NOT_VALID</code>
- <code>DO_NOT_MAIL</code>
- <code>MISSING_MAIL_MERGE_FIELDS</code>
- <code>ORDER_NOT_AVAILABLE</code>
- <code>ORDER_TEMPLATE_MISSING</code>
- <code>RETURN_ADDRESS_PARTIAL</code>
- <code>RETURN_ADDRESS_MISSING_FIELDS</code>
- <code>RETURN_NAME_PARTIAL</code>

POST /v1/integration-orders/{id}/recipients now returns HTTP 200 for an exact duplicate recipient. DUPLICATE_RECIPIENT left the 422 reason-code list.

Adding a duplicate recipient to an integration order

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Adding a duplicate recipient to an integration order

What this means for your integration