> For the complete documentation index, see [llms.txt](https://docs.zapsign.com.br/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zapsign.com.br/english/webhooks/eventos/signer/authentication_failure.md). # Failed Validation This webhook event is triggered when the signer reaches the maximum allowed attempts (3 attempts) to verify their identity using the authentication methods available in ZapSign: **Facial Recognition** and **Identity Validation**. When this notification is received, it means that the signer cannot proceed with the electronic signing process until the client takes action. #### **Possible actions the client can take:** * **Change the authentication method:** Use the [Update Signer ](/english/signatarios/atualizar-signatario.md)endpoint to change the authentication method to an alternative one (e.g., OTP via SMS or email). * [**Reset validation attempts:** ](/english/reset-signer-attempts.md)With this endpoint, the signer will have three new attempts to complete the validation. This event allows the client to make quick and efficient decisions to ensure the continuity and security of the electronic signing process. {% hint style="info" %} In the response, the **authentication\_failure\_reason** parameter explains the reason for the validation failure. {% endhint %} ```json { "sandbox": false, "external_id": "", "open_id": 256, "token": "514ca933-f995-443f-b940-7e82ee5f7c5", "name": "Document", "folder_path": "/", "status": "pending", "rejected_reason": null, "lang": "en", "original_file": "https://zapsign.s3.amazonaws.com/dev/2025/3/docs/92b22e27-b091-4398-940d-6d9976ecdbed/b3871a48-2636-4562-9919-e9dae326db55.pdf?AWSAccessKeyId=AKIASUFZJ7JCTI2ZRGWX&Signature=h7Fab%2F%2F1TggGxgbztlXaDcrxHCg%3D&Expires=1742339713", "signed_file": null, "extra_docs": [], "created_through": "web", "deleted": false, "deleted_at": null, "signed_file_only_finished": false, "disable_signer_emails": false, "brand_logo": "", "brand_primary_color": "", "created_at": "2025-03-18T22:12:37.843154Z", "last_update_at": "2025-03-18T22:12:37.843171Z", "created_by": { "email": "silvana@zapsign.com.br" }, "template": null, "signers": [{ "external_id": "", "sign_url": "https://app.zapsign.com.br/verificar/8XX394fa-cXXX48c2-8d50-2935f5XXX363", "token": "821394fa-c7af-48c2-8d50-2935f5f39363", "status": "link-opened", "name": "Silvana Alvarez", "lock_name": false, "email": "email@email.com", "lock_email": false, "hide_email": false, "blank_email": false, "phone_country": "55", "phone_number": "", "lock_phone": false, "hide_phone": false, "blank_phone": true, "times_viewed": 1, "last_view_at": "2025-03-18T22:12:45.255310Z", "signed_at": null, "auth_mode": "assinaturaTela", "qualification": "", "require_selfie_photo": false, "require_document_photo": false, "geo_latitude": null, "geo_longitude": null, "redirect_link": "", "signature_image": null, "visto_image": null, "document_photo_url": "", "document_verse_photo_url": "", "selfie_photo_url": "", "selfie_photo_url2": "", "send_via": "", "resend_attempts": null, "cpf": "", "cnpj": "", "send_automatic_whatsapp_signed_file": null, "liveness_photo_url": "", "selfie_validation_type": "identity-verification-global", "ip": null }], "answers": [], "auto_reminder": 0, "signature_report": null, "tsa_country": null, "use_timestamp": true, "metadata": [], "event_type": "signer_authentication_failed", "unauthenticated_signer": { "external_id": "", "sign_url": "https://app.zapsign.com.br/verificar/8XX394fa-cXXX48c2-8d50-2935f5XXX363", "token": "821394fa-c7af-48c2-8d50-2935f5f39363", "status": "link-opened", "name": "Silvana Alvarez", "lock_name": false, "email": "email@email.com", "lock_email": false, "hide_email": false, "blank_email": false, "phone_country": "55", "phone_number": "", "lock_phone": false, "hide_phone": false, "blank_phone": true, "times_viewed": 1, "last_view_at": "2025-03-18T22:12:45.255310Z", "signed_at": null, "auth_mode": "assinaturaTela", "qualification": "", "require_selfie_photo": false, "require_document_photo": false, "geo_latitude": null, "geo_longitude": null, "redirect_link": "", "signature_image": null, "visto_image": null, "document_photo_url": "", "document_verse_photo_url": "", "selfie_photo_url": "", "selfie_photo_url2": "", "send_via": "", "resend_attempts": null, "cpf": "", "cnpj": "", "send_automatic_whatsapp_signed_file": null, "liveness_photo_url": "", "selfie_validation_type": "identity-verification-global", "ip": null, "max_attempts": 2, "attempts_used": 2, "authentication_failure_reason": "Unsuccessful validation of Silvana Alvarez due to Attempted deceit, device screen used" } } ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.zapsign.com.br/english/webhooks/eventos/signer/authentication_failure.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.