Is evar that expires after a hit the same as a prop? What's the difference?

Question

Taking page url as an example, what is the difference in capturing page url c02 in an evar that expires after a hit compared to page url t02 captured in a prop?  Thanks in advance!

bjoern__koth · Accepted Answer

Hi @user70977

essentially they react in the same way. I try to avoid props whenever possible, mainly because of length limitations.

Props are great if you use the real-time AA report. Back then, props were helpfule because they allow pathing, but nowadays this can be done on eVar level as well.

https://experienceleague.adobe.com/en/docs/analytics/components/dimensions/evar#concept_6E55483C1EC24566B5D3B2736E766EBC

Value of eVars over props

Adobe recommends using eVars in most cases, supported through the following:

eVars have a 255-byte limit in reports. Props have a 100-byte limit.
Props by default do not persist beyond the hit they are set. eVars have custom expiration, allowing you to determine when an eVar no longer gets credit for a subsequent event. However, if you use report time processing, both props and eVars can use a custom attribution model.
Adobe supports up to 250 eVars, and only 75 props.

See prop for more comparisons between props and eVars.

There are a bunch of discussion in these forums as well over it

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-discussions/props-for-pathing-when-analysis-workspace-allows-quot-flow-quot/m-p/670751#M3692

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/adobe-recommends-using-evars-not-props/td-p/398385

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/always-evars-and-never-props/m-p/694356#M52139

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