error 154

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 format of the field is incorrect.

The vads_totalamount_vat field allows to define the total amount of taxes applied to the whole order. It must consist of numeric characters with a variable length up to 12 characters (n..12).

Check that the value entered in the form is correct.

Example of a correct value


The amount must be expressed in the smallest unit of the used currency (cents for euro).

E.g.: 4525 for 45,25 EUR

Examples of errors:



Make sure the amount submitted in the form is not negative.

Example of error:[vads_totalamount_vat=-3000]