Failover occurred and all VEs were migrated to another nodes by Virtuozzo.
However, VE states and locations were not updated by OACI.
vps.log on the Instance Manager node the failed CHECK_VE_STATE call may be observed for all affected VEs:
2017-08-30 11:00:43,964 () ERROR Pipeline [Shared executor thread #1 @1 @INTERACTIVE] - pipeline #5278 [(CHECK_VE_STATE for: VeId[1005725.node-10001 (lb)]), created at node [im1], step 2 (Check VE location & state), mode: EXEC, state:CALLBACK, reqIs: null] failed with rc = -1
Issue is acknowledged as CCU-17120.
Contact Odin Support to fix VEs locations.