Successful Attachments Transaction Response

```json
{
    "status": "success",
    "attachmentId": "c8f5fdc7-d71c-5cf8-f68c-2e87eff625bf_12B19_999898"
}
```

Your workflow for API consumers should retain this notification for every transaction they send. It contains a unique value called the traceId, which is a 128-bit UUID value that's generated and sent by the clearinghouse whenever it receives a new attachment transaction.

The traceId is a reference value should a user need to check the status of an Attachments Submission endpoint (/submission/v1/uploads).

The acknowledgement appends the tradingPartnerServiceId (12B19 in this example, which is the Payer ID. This is required to request benefit information from an insurance carrier. This will vary based on the payer you want to connect to. Here is a list of test tradingPartnerServiceId), along with the submitterId (999898 in this example).