Getting Data Store and entity connection error

Hi All,

We are getting below error after we deployed our code to QA. It is working fine in DEV but the issue is only in Test Environment. Please help. Thanks. 

Error: "An error occurred while trying to retrieve the data store entity. Verify that the data store and entity have not been deleted, and have the correct security settings. Details: User does not have rights to Perform this Operation."

We have checked that entities are correctly mapped. data store also published but nothing is working. 

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