It may be necessary to retain customer information throughout the verification. The number may be some reference number or record locator related to the customer in your system.

This can be done by sending Veriff us an optional vendorData field along with the created verification session. The vendorData field will also be sent back to you in the decision webhook, which contains the final decision by Veriff about the verification session. The vendorData field is a 40 character string.

An example of a code snippet to pass on an UUID "1234512345" of your customer:

{
    "verification": {
"lang": "et",
   "person": {
        "lastName": "Toomas",
        "firstName": "Tundmatu"
},
"document": {
        "type": "ID_CARD",
        "country": "EE"
},
"features": [
             "selfid"
],
"timestamp": "2019-08-21T17:47:26.183Z",
"vendorData": "UUID: 1234512345"
     }
}
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