Marks (as externally stored) the instance that corresponds to sopInstanceUid in the ExternalStore table
sopInstanceUid
The SOP Instance UID that identifies the instance.
externalStoreGuid
The GUID that identifies the 'External Store'
storeToken
The store token that corresponds to the instance
externalStoreDate
The 'External Store' date.
expireDate
The date that the instance will expire (i.e. be removed) from the 'Local Store'.