**Source URL:** https://limited.veevavault.dev/clinical/vault-api/api-reference/24.3/vault-objects/attachment-fields/update-attachment-field-file.md

# Update Attachment Field File



Update an *Attachment* field by uploading a file. If you need to update more than one *Attachment* field, it is best practice to update in bulk with [Update Object Records](/vault-api/api-reference/24.3/vault-objects/update-object-records).

<Endpoint path="/api/{version}/vobjects/{object_name}/{object_record_id}/attachment_fields/{attachment_field_name}/file" method="POST"></Endpoint>

## Headers {#headers}

<FieldTable>
| Name | Description |
| --- | --- |
| `Content-Type` | `multipart/form-data` |
| `Accept` | `application/json` (default) or `application/xml` |
</FieldTable>

## URI Path Parameters {#uri-path-parameters}

## Request {#request}

<CodeExample title="">
```
curl -X POST -H "Authorization: {SESSION_ID}" \
https://myvault.veevavault.com/api/v24.3/vobjects/product__v/00P000000000202/attachment_fields/file__c/file \
--form 'file=@"Cholecap Prescribing Information.doc"'

```
</CodeExample>

## Response Headers {#response-headers}

<CodeExample title="">
```
{
    "responseStatus": "SUCCESS",
    "data": [
        {
            "responseStatus": "SUCCESS",
            "data": {
                "id": "00P000000000202",
                "url": "/api/v24.3/vobjects/product__v/00P000000000202"
            }
        }
    ]
}

```
</CodeExample>

---

**Previous:** [Download All Attachment Field Files](/clinical/vault-api/api-reference/24.3/vault-objects/attachment-fields/download-all-attachment-field-files)  
**Next:** [Deep Copy Object Record](/clinical/vault-api/api-reference/24.3/vault-objects/deep-copy-object-record)