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Title
Warning occurs during Directory Lookup task: "An error occurred in getting the Downlevel Account -
Description
Warning occurs during Directory Lookup task: "An error occurred in getting the Downlevel Account by SID information for <path to object>. No mapping between account names and security IDs was done."
CAUSE
This error will occur for mailboxes that do not have a Windows User account associated or for mailboxes that are associated with User accounts that have invalid SIDs (Security Identifier) or SIDs from untrusted domains.
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