Hello All,
In case if you see the message <b>"CompVersStrategyMapper.map(); Unknown strategy UpdateLowerOrChangedVersions"</b> on the JSPM while doing an upgrades right after JSPM completes the validation then follow the steps mentioned below to get rid of it or solve it
1) Update the SDM manually with the support pack patch
2) Upgrade the JSPM
3) Upgrade the Support Stack.
Hope this helps.
Thanks,
Praveen