# Player ID validation (deprecated) This webhook is deprecated. Xsolla sends the User validation webhook instead. Xsolla sends a webhook with the user_validation type to the webhook URL to verify that a player is registered in the game. The request is sent before moving virtual items or currency to the game process. Endpoint: POST user-validation Version: 1.0.0 ## Request fields (application/json): - `notification_type` (string, required) Type of notification. - `settings` (object, required) Custom project settings. - `settings.merchant_id` (integer, required) Merchant ID. You can find this parameter in your Publisher Account: - in the Company settings > Company section. - in the URL in the browser address bar on any Publisher Account page. The URL has the following format: https://publisher.xsolla.com//. - `settings.project_id` (integer, required) Project ID. You can find this parameter in your Publisher Account next to the name of the project. - `user` (object, required) User information. - `user.id` (string, required) Player ID in the game. ## Response 404 fields (application/json): - `error` (object) - `error.code` (string) - `error.message` (string) ## Response 500 fields (application/json): - `error` (object) - `error.code` (string) - `error.message` (string) ## Response 200 fields