preCheckMajorVersionUpgradeContext property
This field is only populated when the operation_type is PRE_CHECK_MAJOR_VERSION_UPGRADE.
The PreCheckMajorVersionUpgradeContext message itself contains the details for that pre-check, such as the target database version for the upgrade and the results of the check (including any warnings or errors found).
Implementation
PreCheckMajorVersionUpgradeContext? preCheckMajorVersionUpgradeContext;