When trying to schedule an upgrade on the SDDC Manager, an error message appears:
"Scheduling immediate update of bundle failed. Bundle {0} not found in applicable upgrades, nor found in scheduled upgrades.5.2.1.0
The issue arises because the upgrade process is attempted without following the correct sequence. Directly moving from version 5.2.1.0 to 5.2.1.2 is not supported.
To fix this, follow the correct upgrade path: