Identifying yourself when exchanging with the payment gateway

To be able to interact with the payment gateway, the merchant needs to have:

The shop ID: allows to identify the merchant website during the exchange. Its value is transmitted in the vads_site_id field.
The key: allows to compute the alphanumeric signature transmitted in the signature field.

To retrieve these values:

Sign in to the Merchant Back Office: https://paiement.systempay.fr/vads-merchant/
Enter your user name.
Your login details (username and password) were sent to you in an e-mail with the subject Connection identifiers- [your shop name].
Enter your password.
Your login details (username and password) were sent to you in an e-mail with the subject Connection identifiers- [your shop name].
Click Sign in.
The user’s account is blocked after 3 incorrect password entries. If your account is blocked, click on Forgotten password or locked account to reset it.

A user's password is valid for 90 days. After this period, the user must modify it by logging into his account.
Click Settings > Shop.
Select Keys.
Figure 1. Keys tab

Two types of keys are available:

The test key that allows to generate the form signature in test mode.
The production keythat allows you to generate the form signature in production mode.

These keys can be numeric or alphanumeric.

For maximum security, it is recommended to use an alphanumeric key.

To change the format of your test key, click the Regenerate a test key button and select the format ("ALPHANUMERIC" or "NUMERIC").

To change the format of your production key, click the Regenerate a production key button and select the format ("ALPHANUMERIC" or "NUMERIC").