error 10105 - Error 10105 - UNKNOWN_MID

In PRODUCTION mode, if your Buyer gets an error message such as:

An error occurred during the payment request, please make sure that the posted parameters match the ones specified in the documentation.

It becomes impossible to make the payment and the transaction is definitively lost.

You will receive an e-mail notification containing the form that the gateway was unable to process and the value of the invalid field.

We invite you to check the following reason(s) to resolve the issue:

The requested MID does not exist
The value transmitted in the vads_contracts field of your payment form does not correspond to a MID declared within your company. Solutions: See the list of available MID numbers via your Merchant Back Office (Settings > Shop > MID association menu). Make sure to use the network corresponding to your MID (for more information, see the definition of the vads_contracts field in the Hosted Payment Page - Implementation guide). Contact E-commerce customer service.

The requested MID does not exist

The value transmitted in the vads_contracts field of your payment form does not correspond to a MID declared within your company.

Solutions:

See the list of available MID numbers via your Merchant Back Office (Settings > Shop > MID association menu).
Make sure to use the network corresponding to your MID (for more information, see the definition of the vads_contracts field in the Hosted Payment Page - Implementation guide).
Contact E-commerce customer service.