<h3>Zerto version on source is 6.0u1 and customer has added 3 EXI hosts with 6.5 with build 10719125 version. VRA deployment is failing stating the version is not supported. Compatibility matrix does not show anything for 6.0 version. Please let me know if it is supported. Can we tweak the support version file in zerto?</h3>
Build 10719125 would be ESXi 6.5 U2ish.
seems to indicate that is supported, but you may need to update the supported_updates.txt.