Is it mandatory to enable a Primary Identity when streaming data from a website into AEP

Two questions:

1. Is this a Web SDK implementation?
2. Are you just using CJA? Or will you also be using an application that uses Profiles like Real-Time CDP or Journey Optimizer?

If it's a Web SDK implementation, the typical way to capture identities is through the identityMap field. By default, identityMap is part of all XDM ExperienceEvent schemas. You don't need to explicitly label an identity field or that it's a primary identity in the schema. When you enable the schema for Profile, there will be a dialog where you indicate that your primary id is coming from identityMap. There is a bunch of content about this in our Web SDK tutorial: https://experienceleague.adobe.com/en/docs/platform-learn/implement-web-sdk/overview

When using Profile (e.g. in RTCDP and AJO), having a primary identity is necessary for storing the profile fragment. Traditionally this has been done in the identityMap. On a website with Web SDK, when a user is not logged in and anonymous, the ECID will automatically be sent as the primary identity. You don't need to do anything. You won't see it in the call leaving the browser, but the Edge Network will attach it to the call when it sends the data to Platform and it is visible in the Assurance debugging tool. When the user authenticates, you need to manually add the authenticated id to the identityMap. There are still some reasons to label this authenticated id as the primary id in identityMap (the RTCDP->Target integration is a little better), but the recommended technique is to use the newish Identity Map Linking Rules feature, which is a UI configuration which allows you assign priority to the incoming ids for event data. . This feature handles shared device scenarios that can lead to profile problems (e.g. you log in to a website on your laptop, and then i log into the same website using your laptop). There are a few videos about this new feature here: https://experienceleague.adobe.com/en/docs/platform-learn/tutorials/identities/graph-linking-rules/overview

That's a lot of info I just dumped on you, but I hope it helps. Let me know if you have more questions. I don't think the lack of a primary id would impact your CJA data.

Hi @kumarrishii,

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