Ensure that the supported version of Dell EMC Unity Unisphere is installed on the DELL EMC Unity arrays. For the list of all the supported versions of Dell EMC Unity Unisphere, refer to the NetBackup Snapshot Manager section in the NetBackup Hardware and Cloud Storage Compatibility List (HCL).

A user account exists with the permissions to call the Dell EMC Unity Storops SDK methods and all snapshot operations on the array.