overwriteCrossDomainMCIDAndAID in Web SDK | Community
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John_Man
Community Advisor
John_ManCommunity Advisor
Community Advisor
August 16, 2024
Question

overwriteCrossDomainMCIDAndAID in Web SDK

  • August 16, 2024
  • 1 reply
  • 1859 views

Hi,

 

In the past with AppMeasuremnt and ID Service, we can config this overwriteCrossDomainMCIDAndAID option to support app-to-web visitor persistence. But it seems this option is no linger in Web SDK?

 

Or in Web SDK, the adobe_mc value from the app always overwrite the cookie in the web?

 

Thanks, John

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    1 reply

    FarazHusain
    Adobe Employee
    FarazHusainAdobe Employee
    Adobe Employee
    August 16, 2024

    In WebSDK, it is done using appendIdentityToUrl. Here's the reference for the same - https://experienceleague.adobe.com/en/docs/experience-platform/web-sdk/commands/appendidentitytourl

     

    John_Man
    Community Advisor
    John_ManCommunity AdvisorAuthor
    Community Advisor
    August 16, 2024

    Hi @farazhusain ,

     

    Thanks for your reply. We have no issue to create the adobe_mc and the URL. My question is on the "overwriteCrossDomainMCIDAndAID" config, when using AppMeasurement, this is a configurable parameter to control whether the adobe_mc ECID value will overwrite the web site's existing ECID. And it's default value is "false".

     

    Now we are using WebSDK, would like to know if this config parameter is still valid and where to set it?

     

    Thanks,

    John

     

    John_Man
    Community Advisor
    John_ManCommunity AdvisorAuthor
    Community Advisor
    August 16, 2024

    @john_man It seems WebSDK doesn't support this function.

    One way to do this: If you want to use the identity from the URL, you have to delete the identity cookie manually before the send event call.

     

    The AEP Web SDK extracts the ECID and puts it in the identitymap. It can also be used to overwrite existing ECID or konductor cookies - but if there is already an identity cookie, it takes precedence. So you might need to manually remove the existing cookie before overwriting it. The solution will be a custom one in the case of WebSDK for this functionality.


    Hi @farazhusain 

     

    Thanks again for your prompt reply.

     

    Manually deleting as existing cookie as it takes precedence seems a bit complex, as it's just a config in the past with AppMeasurement.

     

    Anyway, I just tested it in a simple web page with Web SDK, and manually put the adobe_mc parameter in the address bar, I found that the ECID in the existing cookie actually can be over written. Looks like the behavior is to over write existing cookie in Web SDK.

     

    Thanks,

    John

     

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