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

# Errors

> What the gateway's messages mean, and what to do.

| The POS gets | What it means | What to do |
| - | - | - |
| HTTP `401` | The key id or secret is wrong, or the key was revoked. | Check both fields; create a new key if the secret was lost. |
| This POS Gateway key can't use MID … | The MID isn't one of this merchant's, or isn't linked to a location yet. | Check the MID; Mojo Payments links MIDs in Card Processing. |
| This POS Gateway key is for another location; it can't use MID … | The key was made for a different location. | Use the key made for this register. |
| This POS Gateway key is for terminal …; it can't use terminal … | The key belongs to another register's terminal. | Use this register's own key, or make one for this terminal. |
| POS Gateway isn't turned on at … | The gateway is off at that location. | A manager turns it on under Settings → POS Gateway. |
| POS Gateway isn't turned on for this merchant. | The product isn't on. | Contact Mojo Payments. |
| This merchant isn't active with Mojo Payments, so it can't take payments. | The account is suspended or closed. | Contact Mojo Payments. |
| MID … has no CardPointe credentials set up in Mojo yet (Card Processing). | The MID's CardPointe login hasn't been added. | Contact Mojo Payments. |
| CardPointe did not accept this MID's gateway credentials. | CardPointe refused the MID's login. | Contact Mojo Payments to replace it. |
| CVV required, but not entered. (or ZIP) | The location requires it and the customer skipped it. | Try again; the customer enters it on the terminal. |
| The card was approved for only … so the authorization was voided. | A partial approval, undone. | Take another payment for the full amount. |
| Send a CardSecure token or a stored profile, never a card number. | A card number was sent card-not-present on a production MID. | Use a token or profile. |
| The payment couldn't be completed because of an unexpected error. | Something failed in the middle. | **Check the transaction in CardPointe before trying again.** |
| Operation cancelled by customer | The customer cancelled on the terminal. | Start the sale again if they want to pay. |

Mojo Payments sees the gateway's failures as they happen. If something keeps failing, email
[hello@paymentsmojo.com](mailto:hello@paymentsmojo.com) with the location, the time, and the order id.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.