vRealize Automation 8.x is supported on vRealize Operations Manager 8.3 version. Workload placement for day 1 operations is supported from vRealize Automation 7.3 onwards with vRealize Operations Manager 6.6 and above. Workload placement for day 2 operations is supported from vRealize Automation 7.5 onwards with vRealize Operations Manager 7.0 and above.