> For the complete documentation index, see [llms.txt](https://docs-connector.ecomsend.com/ecomsend-connector/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-connector.ecomsend.com/ecomsend-connector/orders-and-fulfillments/sync-fulfillment/fulfillment-sync-failed.md).

# Fulfillment sync failed?

When syncing fulfillments from TikTok Shop (TTS) to Shopify via EcomSend Connector, you may see the following sync statuses:

* **Not synced:** The fulfillment has not been synced yet.
* **Synced:** The fulfillment has been successfully synced via EcomSend Connector.
* **Sync failed:** EcomSend Connector attempted to sync the order but failed.

<figure><img src="/files/A7UIN2DPUJZ6okEO01uR" alt=""><figcaption></figcaption></figure>

👉 For fulfillments that failed to sync, **click the failed badge** to view detailed information. Follow the instructions to identify the issue, make updates, and then re-sync the fulfillment.

If you have any questions, please feel free to contact our professional 24/7 support team.

***

## Common failure examples and solutions

<figure><img src="/files/soZGvdGTHkWya9OidW4U" alt=""><figcaption></figcaption></figure>

**Reason:** Your carrier \*\* is not included in TikTok Shop’s list of integrated carriers.

**Solution:** TikTok Shop **only supports** shipments handled by carriers that are [**officially integrated**](https://seller-us.tiktok.com/university/essay?knowledge_id=8308896260065025\&role=1\&course_type=1\&from=search%7BcontentIdParams%7D\&identity=1\&anchor_link=EB7F00D0) with the platform. Please use one of the supported carriers.\
If your carrier *is* supported by TikTok Shop but appears under a different name in Shopify, you can use our [**Carrier Mapping**](/ecomsend-connector/settings/order-and-fulfillment-sync-settings.md#sync-rules) feature to link them correctly.

***

<figure><img src="/files/wazhEDusyN9KKal028mN" alt=""><figcaption></figcaption></figure>

**Reason:** The tracking number can only be updated once.

**Solution:** TikTok Shop allows each tracking number to be updated **only once**, and the update must occur **within 72 hours** of fulfillment.\
If you need to change the tracking number again after that window, please **contact TikTok Shop support** for assistance.

***

<figure><img src="/files/MdXv4hocYH220QqiFNJN" alt=""><figcaption></figcaption></figure>

**Reason:** TikTok order line items are already fulfilled with different items, cannot create new fulfillment

**Solution:** If you need to proceed with a new fulfillment, please **contact TikTok Shop suppor**t to **cancel the previous fulfillment**, then resync the order afterward.

**Need help?** Feel free to contact us via online chat or [email](mailto:undefined). Our world-class support team is available 24/7 and always ready to assist you. 🌻