---
title: "Using NIGO"
slug: "using-nigo"
description: "Validate document attachments with NIGO Document Validation, ensuring compliance and quality checks for seamless transactions. Request, review, and reject as needed."
updated: 2026-11-05T19:41:27Z
published: 2026-11-05T19:41:27Z
canonical: "docs.onespan.com/using-nigo"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Using NIGO

## Enabling NIGO for a Transaction

To enable NIGO on a transaction:

1. When [Adding Recipients](/v1/docs/configuring-recipients#adding-recipients-to-a-transaction) to a transaction click the ellipsis beside the recipient (...) and then click **Add Attachments Request** and then **Add**. This will allow you to specify one or more supporting documents (e.g., a driver's license) that the recipient must upload before the transaction is completed.

![Menu options for editing recipient details, notifications, authentication, and settings.](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/OSS_Recipient%20Attachments%20Request.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)
2. Enter a name and description for the attachment you are requesting. Then use the **Document Type** dropdown to select the type of document you would like your signers to upload.
3. To activate NIGO, select the **Verify Document** option. Optionally, you can also select the **Required** option.

![Document signing interface showing recipient details and required attachments.](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/NIGO.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)
4. Click **Save**.

## Rejecting a Document

If the NIGO validation determines that the attached document that was uploaded does not meet the requirements you were looking for (wrong document, expired, not of good quality) you will be notified and given the option to reject the document and request a new one.

To reject an attached document:

1. Open the transaction that was flagged as having a document that is not in good order.
2. In the recipients section you will see the recipient with the improper attachement. ![Recipient uploads section showing uploaded file and document type warning message.](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/NIGO_Reject.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)
3. Toggle the **Reject** button. You can also use the comment option to explain to the signer why the document was rejected.

![User interface showing options to comment, save, and reject actions.](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/NIGO_Reject_On.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)
4. Click **Save & Notify** to reject the document and request a new one from the signer.

Use the download button at the top of the file list to download all documents as a zip file. Use the download next to each attached file to download that file individually.

## Reviewing a Document

As part of **NIGO Document Validation**, senders can then mark previewed attachments as Reviewed. This action is recorded in the audit trail and can be undone.

To review an attached document:

1. Open the transaction that was flagged as having a document that is not in good order.
2. In the recipients section you will see the recipient with the improper attachement. Click the preview icon. ![Recipient uploads section showing uploaded file and document type warning message.](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/NIGO_Reject.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)
3. Click **Mark as Reviewed**. ![](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/NIGO_Review.png?sv=2026-02-06&spr=https&st=2026-11-09T00%3A05%3A56Z&se=2026-11-09T01%3A05%3A56Z&sr=c&sp=r&sig=Sp88EDrG0eYq9ZnennmmKC0SHBiTctMCh0a5fIzgdOI%3D)