# Troubleshooting

{% hint style="info" %}
If you have a problem that you don't see here, please contact us! 
{% endhint %}

<details>

<summary>Error: Couldn't resolve host name</summary>

Does your code call the Snowdrop MRS domain name we supplied you? If you used the example code in the quickstart, it does not contain a valid domain. You should replace the `regional-snowdrop-domain-goes-here.com` in your code.

</details>

<details>

<summary>401 Error: Invalid apiKey</summary>

You must specify the `X-Api-Key` value in the Headers, as in the [quick-start](https://devs.snowdropsolutions.co.uk/implementation-guides/quick-start "mention") guide. Make sure your code has the API Key that Snowdrop supplied you. If you do not have an API key, please contact us.

</details>

<details>

<summary>404 Error: Not Found</summary>

Are you sure you have specified the full URL correctly? It is easy to miss out components of the URL. Make sure you contain the /api/v3/ part.\
It should read: <https://regional-domain-goes-here.co&#x6D;**/api/v3/**&#x6D;erchant?merchant\\_name=mcdonalds\\&type=extended\\&location=london\\&country=GBR\\>
or \
<https://regional-domain-goes-here.co&#x6D;**/api/v3/**&#x6D;erchant/list>

</details>