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

# Do Not Share/Sell

> How Conversion honors do-not-share and do-not-sell requests and excludes those contacts from downstream ad audience syncs.

This page explains how Conversion honors do-not-share and do-not-sell requests from data subjects, and how those requests are used to keep affected contacts out of ad audiences that sync with ad platforms.

For these requests, the customer is the Business and Conversion is the Service Provider, as defined in [DPA §12](https://conversion.ai/dpa).

## The right to opt out

Several privacy regimes give data subjects the right to opt out of the sharing or sale of their personal information. The California Consumer Privacy Act, as amended by the CPRA, is the most common example, and comparable rights exist under other state and international laws.

A do-not-share/sell request is separate from a deletion request. The contact remains in your workspace, but their personal information must not be shared with, or sold to, third parties for advertising or other qualifying purposes.

## Honoring a request in Conversion

Conversion honors do-not-share/sell requests by recording the request against the contact and using that record to exclude the contact from downstream data sharing.

The request is stored in a contact field. You can set the field:

* **Manually** on the contact record.
* **In bulk** with an [Update Field](/product-docs/workflows/nodes/update-field) node in a workflow, for example off the back of a form submission or an API call from your preference center.
* **Through the API** by updating the field on the contact.

Any field you use for this purpose can be created under **Settings > Fields**. See [Fields](/product-docs/workspace-settings/fields/overview) for how to add and manage custom fields.

## Filtering opted-out contacts from ad audiences

Ad audiences with a bidirectional membership sync push contacts to the connected ad platform and pull membership changes back. To honor a do-not-share/sell request, the opted-out contact must be excluded from every ad audience that syncs to a third-party ad platform.

Use the do-not-share/sell field as a filter criterion on any [dynamic audience](/product-docs/audiences/creating-an-audience) that is linked to an ads audience:

1. Open the audience and edit its filter criteria.
2. Add a condition that excludes contacts where the do-not-share/sell field is set.
3. Save the audience.

Once the filter is in place, opted-out contacts are dynamically removed from the ads audience and are not re-added while the field remains set. Contacts who later withdraw their request return to the audience automatically when the field is cleared.

For how ads audience syncing works and which fields are sent to each platform, see [Ads audiences](/product-docs/audiences/ads-audiences).

<Info>
  Static audiences do not re-evaluate membership against filter criteria. If you use static audiences with a linked ads audience, remove opted-out contacts from the static audience directly.
</Info>

<Warning>
  This page is intended as general implementation guidance and is not legal advice. We recommend working with a qualified data protection professional to validate your compliance status.
</Warning>