When migrating to Office 365, it is possible to have large attachments saved to One Drive for Business. If this option is selected during the migration, you may experience the following error in the On Demand Migration for Email (ODME) migration logs:
(Could not create view-only URL)
When setting up large attachments to be stored on One Drive for Business, make sure of the following:
1) The user has a One Drive for Business account allocated to them.
2) ODME is configured to save large attachments to One Drive for Business under Options | Target.
3) Make sure that Office 365 is configured for attachment linking and storage by using the following steps: