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Interesting. The example file 5ZoneDDCycleonAny also has no control zone input (last entry not entered)

AvailabilityManager:NightCycle,
 VAV Sys 1 Avail,         !- Name
 SysAvailApplicSch,       !- Applicability Schedule Name
 FanAvailSched,           !- Fan Schedule Name
 CycleOnAny,              !- Control Type
 1,                       !- Thermostat Tolerance {deltaC}
 7200.;                   !- Cycling Run Time {s}

The IDD calls for these inputs. Note that this object states only 6 inputs are required, not 7. Try entering the name of the zone you want to use to test zone conditions for when the AHU should turn on.

 AvailabilityManager:NightCycle,
   \min-fields 6
 A1 , \field Name
 A2 , \field Applicability Schedule Name
 A3 , \field Fan Schedule Name
 A4 , \field Control Type
 N1 , \field Thermostat Tolerance
 N2 , \field Cycling Run Time
 A5 ; \field Control Zone Name