# How to connect MDM Express and fix common order errors

**MDM Express** is a courier/COD network you connect from the Apps page to send orders as leads for delivery and sync status back to Dropify.

## Steps

1. Go to **Apps → MDM Express**. If you don't have an account, use **Create New Account** to register on the MDM Express site first.
2. Click **Connect Account**.
3. Enter your **Store ID** and **API Key**, both from your MDM Express dashboard, then submit.
4. Once connected, orders are sent to MDM Express as leads; the customer's city is matched automatically against MDM Express's city list.
5. To stop using the integration, open the app page and choose **Disconnect Account**.

## Common problems

- "Failed to connect" or account shows as not configured → make sure both the Store ID and API Key are filled in and saved; either one missing will block sending orders.
- "Authentication failed" or "not authorized" error → your API key is invalid or has been revoked; reconnect with a fresh key from MDM Express.
- "Invalid city" error → the order's city couldn't be matched to MDM Express's city list; check the city spelling on the order.
- "Invalid phone" error → the customer's phone number on the order isn't in a format MDM Express accepts.
- "Product not found" error → the SKU on the order line doesn't exist in MDM Express's catalog for your store; confirm the product's SKU matches what's set up with MDM Express.
- Country coverage → MDM Express currently serves Libya and Iraq, with Lebanon in beta and Qatar, Bahrain, and Oman launching soon; check before connecting if you sell elsewhere.

## Related
- [Which courier / COD delivery app should I connect on Dropify?](https://help.dropify.shop/en/shipping/choose-a-courier-integration/)
- [How to connect IW Express for Gulf region deliveries](https://help.dropify.shop/en/shipping/iw-express/)
- [How to connect MlShipAfrica for deliveries](https://help.dropify.shop/en/shipping/mlshipafrica/)