signature

Description	Mandatory parameter. Allows to verify the integrity of transmitted requests. This value is computed: by the merchant website during the payment request, by the payment gateway during the response. Input and output field, returned in the response (IPN and Return URL).
Format	an40
Error code	00 - signature Appears if the value of this field is incorrect, 70-empty params if the field is absent or empty. Frequent errors: The fields of the form have not been encoded in UTF-8. The MODE (TEST or PRODUCTION) or the key used is incorrect. Line break or carriage return posted in the form. Quotation marks ["] posted in the form. The type of computation algorithm used is not the correct one. The transmitted signature does not respect the rule of signature computation.
Category	Technical details