There are problems with syncing after enabling the Multi-Geo functionality of SPO. The sites that were moved to a new geo-location are no longer visible in the sync project and are marked as outstanding in OIM. The change of the location also affects the URL of the site, adding for example "acp" or "nam" to it. The sync does not use the URL as the ID for any of the matching rules and no new site are created with the same url ending. So it's not just a mismatch because of the URL change and there is no target system scope that would filter out the site.
原因
This is a product defect (459627).
対策
WORKAROUND:
None
STATUS:
This will be fixed in a future release of the product. If you require this immediately corrected, please contact support for a hotfix referencing the defect ID 459627.