> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.trackingmore.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Response Codes of TrackingMore API

### There are different response codes for different TrackingMore API versions.

###### Something in Common for V2, V3, V4:
1. Codes in the **2xx** range indicate **success**;
2. Codes in **4xx range** indicate an error resulted from the provided information (e.g. a required parameter was missing, a charge failed, etc.), which is usually mistaken by users. In this case, users can check header, request & response by yourself. If issues still, please contact us at support@trackingmore.com or on the live chat. 
3. Codes in **5xx** indicate an **error** with **Trackingmore's servers**.  

###### Difference:
1. Code **41xx** is only for the **V4 **version ( and 4160,4161 for awb) ; 
2. Code **40xx** is only for the ** V2** version. 

|| For all response codes in different API versions, please check the below links. 
|| [V4 API response codes List](https://www.trackingmore.com/docs/trackingmore/txrwztdrj9lfa-response-code)
|| [V3 API response codes List](https://www.trackingmore.com/v3/api-index#status-code)
|| [V2 API response codes List](https://www.trackingmore.com/v2/api-index.html#status-code)