> ## Documentation Index
> Fetch the complete documentation index at: https://dev.puppetvendors.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Fulfillment

> Update fulfillment tracking information as a vendor

<Note>
  **V2 Alpha** — This endpoint is part of the V2 API preview. Breaking changes may occur.
</Note>

## Overview

Update tracking information on an existing fulfillment belonging to the authenticated vendor. This syncs the updated tracking to Shopify and optionally re-notifies the customer. Only fulfillments for the vendor's own line items can be updated.

<Note>
  **Vendor Token Required** — This endpoint requires a vendor-scoped JWT token. Merchant tokens will receive a 403 error.
</Note>

### Use Cases

* **Correct tracking numbers** — Fix a mistyped tracking number after fulfillment
* **Update carrier** — Change the shipping carrier if initially set incorrectly
* **Re-notify customers** — Resend shipping notifications with corrected info

## Path Parameters

<ParamField path="fulfillmentId" type="string" required>
  The line item ID (fulfillment is stored on the line item record).
</ParamField>

## Request Body

All fields are optional. Only provided fields will be updated.

<ParamField body="trackingNumber" type="string">
  Updated tracking number.
</ParamField>

<ParamField body="shippingCarrier" type="string">
  Updated shipping carrier name.
</ParamField>

<ParamField body="trackingUrl" type="string">
  Updated tracking URL. Must be a valid URL.
</ParamField>

<ParamField body="notifyCustomer" type="boolean">
  Whether to send a notification email to the customer with the updated tracking.
</ParamField>

## Response

```json 200 theme={null}
{
  "success": true,
  "data": {
    "message": "Fulfillment updated successfully"
  }
}
```

### Error Response

```json 404 theme={null}
{
  "success": false,
  "error": {
    "message": "Fulfillment not found",
    "code": "NOT_FOUND"
  }
}
```

## Example

```bash theme={null}
curl -X PUT "https://staging-api.puppetvendors.com/fulfillments/507f1f77bcf86cd799439015" \
  -H "Content-Type: application/json" \
  -H "x-access-token: YOUR_VENDOR_JWT_TOKEN" \
  -d '{
    "trackingNumber": "1Z999AA10123456784",
    "shippingCarrier": "UPS",
    "trackingUrl": "https://www.ups.com/track?tracknum=1Z999AA10123456784",
    "notifyCustomer": true
  }'
```

### More Examples

**Update tracking info after shipping**

```bash theme={null}
curl -X PUT "https://staging-api.puppetvendors.com/fulfillments/507f1f77bcf86cd799439015" \
  -H "Content-Type: application/json" \
  -H "x-access-token: YOUR_VENDOR_JWT_TOKEN" \
  -d '{
    "trackingNumber": "1Z999AA10123456784",
    "shippingCarrier": "UPS",
    "trackingUrl": "https://www.ups.com/track?tracknum=1Z999AA10123456784",
    "notifyCustomer": true
  }'
```