Numeric success event limits in Adobe Analytics | Community
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March 9, 2026
Question

Numeric success event limits in Adobe Analytics

  • March 9, 2026
  • 2 replies
  • 19 views

What is the maximum value(integer) that can be passed in a numeric success event per hit? Is there a cap on the accumulated sum of a numeric event over time?

    2 replies

    MandyGeorge
    Community Advisor and Adobe Champion
    Community Advisor and Adobe Champion
    March 9, 2026

    As far as I know, there isn’t a technical limit to how the data can be collected in terms of events. But in terms of how the data is displayed, Adobe does have some limits. I’ve experimented with calculated metrics that result in very large numbers, and somewhere around 1e+21 it starts converting to scientific notation (1e+21 is around one sextillion). Eventually numbers bigger than that just start to say “infinity” (although I’m not sure the threshold between scientific notation and infinity). 

    That said, I’m not sure how these very large numbers translate into the output from data warehouse, data feeds, or report builder.

    Jennifer_Dungan
    Community Advisor and Adobe Champion
    Community Advisor and Adobe Champion
    March 9, 2026

    Hi ​@ManuS_ 

     

    Are you referring to the Event Serialization for success events? The value that is used to determine a “unique success”, and if the serialization is used again, subsequent success events will be ignored?

     

     

    If so, the Event Serialization only supports 20 bytes of data, if you send more than 20 bytes, the value will be truncated, and only the first 20 will be used.

     

    https://experienceleague.adobe.com/en/docs/analytics/implementation/vars/page-vars/events/event-serialization

     

    I have advocated that 20 is not enough, given many systems are now using 32 or 36 bit guids….  but I imagine the infrastructure to support a change would be pretty large…