The property has an invalid value. ICalUid (4350221)

When migrating calendar with On Demand Migration for Email (ODME), the following error may occur:

The property has an invalid value. ICalUid

Followed by:

Failed to retrieve 1322 appointments from Calendar

When migrating calendar appointments, the error "The property has an invalid value. ICalUid" was considered as a folder-level error and, as a result, all appointments from this folder were not migrated.

This issue ODME-5400 has been resolved for On Demand Migration for Email (ODME).  

Release 1.12.0.18007 (04/19/2019)

Now messages that generate the error are skipped, and the rest of the folder migrates in "one-by-one" migration mode.

WORKAROUND

Migrate the items that will not migrate into a PST file and import them into Exchange or Office 365.