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This entry covers the API changes released on June 1, 2026.

## New and updated unified response codes

We've added new codes and updated the text for several existing codes in the [Pay In unified response codes reference](/guides/pay-in-unified-response-codes-reference). These codes apply to Pay In transactions made with v2 of the API.

### New response codes

| Code    | HTTP Status Code | Reason                                  |
| ------- | ---------------- | --------------------------------------- |
| `D0316` | 402              | Authentication error                    |
| `D0480` | 402              | Inactive account                        |
| `D0481` | 402              | Closed account                          |
| `D0740` | 402              | ACH Risk Decline                        |
| `E3017` | 400              | Invalid Total Amount                    |
| `E3729` | 400              | Invalid Amount                          |
| `E7046` | 400              | The checkuniqueId provided is not valid |

We also added descriptions to the existing `D1000`, `D1001`, `D1002`, and `D1003` codes and clarified their resolution steps.

### Updated response code text

We revised the description, resolution, or both for these existing codes:

| Code    | What changed                                        |
| ------- | --------------------------------------------------- |
| `D0715` | Resolution now directs you to attempt an ACH Return |
| `D0725` | Updated description and resolution                  |
| `D0730` | Updated description and resolution                  |
| `D0731` | Updated description and resolution                  |
| `D0735` | Updated description                                 |

See the [Pay In unified response codes reference](/guides/pay-in-unified-response-codes-reference) for the full description and resolution text for every code.