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Paras JainParas Jain 

sandbox and production release for locker services services are different or in both environment on 13 June 2017 it is compulsory?

sfdcMonkey.comsfdcMonkey.com
hi paras Jain
LockerService, which has been a critical update since Summer ’16, is enforced for all orgs in Summer ’17.
Resource : https://releasenotes.docs.salesforce.com/en-us/summer17/release-notes/rn_lightning_lockerservice.htm?
thanks
let me know if it helps you