Hi Ashok,The above question of Data elements on storage duration is it
related to Launch?If so, I don't think you will have a problem in using
None in Data element storage. Data Elements can be stored in 4 different
scopes: Visitor, Session, Pageview, and None. This determines when you
are able to recall stored values.Please go through the below blog link
for more
clarificationhttps://jimalytics.com/tag-management/adobe-launch-data-elements-guide/#Storage_TypesThanks