"Error writing list item" during document migration. (4245569)

"Error writing list item" during document migration.

And the  similar error  could  be foung  in the log file:

<message>Error writing List item</message>
      <stackTrace>System.InvalidOperationException: Error adding a reference to the migrated document to the Link Tracking database.

Reason: Cannot open database "QuestLinkTracking" requested by the login. The login failed.
Login failed for user 'NT AUTHORITY\NETWORK SERVICE'.

Account  used for migration does not have write permissions on the QuestLinkTracking database.

Please give  write permissions to this account on the QuestLinkTracking database. Please note that write permissions are required to anyone migrating documents and read permissions to anyone who might want to traverse an intra-document link.