---
title: Cookie matching
description:   For matched users, both SSP UID and DSP UID will be sent in the fields bidRequest.user.id and bidRequest.user.buyeruid (find more here). If user is new, there only SSP UID (bidRequest.user.id) will
---

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# Cookie matching

### Table of contents

- [Adskeeper initiate and Adskeeper (both) store table](https://help.adskeeper.com/cookie-matching#toc1)
- [Adskeeper initiate sync Partner store table](https://help.adskeeper.com/cookie-matching#toc2)
- [Partner initiate sync Adskeeper (both) store table](https://help.adskeeper.com/cookie-matching#toc3)
- [Partner initiate and Partner (both) store table](https://help.adskeeper.com/cookie-matching#toc4)

 

For matched users, both SSP UID and DSP UID will be sent in the fields bidRequest.user.id and bidRequest.user.buyeruid (find more [here](https://help.adskeeper.com/cookie-matching#point6)). If user is new, there only SSP UID (**bidRequest.user.id**) will send.

There’re 4 possible scenarios for cookie matching:

**Adskeeper initiate and Adskeeper (both) store table**

For this scenario Adskeeper expect from Partner sync url and user id in Adskeeper redirect url

Link example:

*\[https://partnerURL.com/sync?gdpr={GDPR}&gdpr\_consent={GDPR\_CONSENT}&us\_privacy={CCPA\_CONSENT}&redirect\_url=https://cm.adskeeper.com/m?cdsp=123456&c={user.id}\]*

 

**Adskeeper initiate sync Partner store table**

Adskeeper will expect only partner sync url with user.id parameter

Link example:

*\[https://partnerURL.com/sync?user\_id={muidn}&gdpr={GDPR}&gdpr\_consent={GDPR\_CONSENT}&us\_privacy={CCPA\_CONSENT}\]*

 

**Partner initiate sync Adskeeper (both) store table**

Adskeeper will expect call of Adskeeper sync url with changed user macro

Link example:   
*\[https://cm.adskeeper.com/m?cdsp=123456&c={user.id}&gdpr={GDPR}&gdpr\_consent={GDPR\_consent\_string}&us\_privacy={CCPA\_consent\_string}&adu=https://partnerRedirectUR.com/sync?user\_id={muidn}\]*

 

**Partner initiate and Partner (both) store table**

Adskeeper will expect call of Adskeeper sync url with changed user.id macro and partner redirect url with user.id parameter

Link example:

*\[https://cm.adskeeper.com/m?cdsp=123456&gdpr={GDPR}&gdpr\_consent={GDPR\_consent\_string}&us\_privacy={CCPA\_consent\_string}&adu=https://partnerRedirectUR.com/sync?user\_id={muidn}\]*

where:

- {GDPR} - 0 - indicates that the user is not located in the country under the GDPR regulations. 1 - indicates that the user is located in the country under the GDPR regulations
- {GDPR\_consent\_string} - IAB consent string provided when the request is subject to GDPR
- {CCPA\_consent\_string} - consent string provided when the request is subject to US Privacy zone
- {user.id} - platform specified user identifier
- {muidn} - Adskeeper specified user identifier

- [Advertisers / Affiliates](https://help.adskeeper.com/advertisers-affiliates?hsLang=en#main-content)

    - [Adskeeper Basics](https://help.adskeeper.com/advertisers-affiliates?hsLang=en#adskeeper-basics)
    - [Campaign Setup and Management](https://help.adskeeper.com/advertisers-affiliates?hsLang=en#campaign-setup-and-management)
    - [Conversion Tracking](https://help.adskeeper.com/advertisers-affiliates?hsLang=en#conversion-tracking)
- [Publishers](https://help.adskeeper.com/publishers?hsLang=en#main-content)

    - [General](https://help.adskeeper.com/publishers?hsLang=en#general)
    - [Websites and widgets](https://help.adskeeper.com/publishers?hsLang=en#websites-and-widgets)
    - [Compliance](https://help.adskeeper.com/publishers?hsLang=en#compliance)
    - [Payment](https://help.adskeeper.com/publishers?hsLang=en#payment)
- [Compliance and Creatives](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#main-content)

    - [Compliance and Creatives Basics](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#compliance-and-creatives-basics)
    - [High Safety Ranking](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#high-safety-ranking)
    - [Low Safety Ranking](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#low-safety-ranking)
    - [AI Image Generation](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#ai-image-generation)
    - [Moderation Process](https://help.adskeeper.com/compliance-and-creatives?hsLang=en#moderation-process)
- [Advertisers Super Client Account](https://help.adskeeper.com/advertisers-super-client-account?hsLang=en#main-content)

    - [Clients](https://help.adskeeper.com/advertisers-super-client-account?hsLang=en#clients)
- [API](https://help.adskeeper.com/api?hsLang=en)
- [DSP](https://help.adskeeper.com/dsp?hsLang=en)

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