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The OA specification name is in the wrong field. It should be in a later field named "Design Specification Outdoor Air Object Name for Sizing". The OA spec for Sizing is copied into the expanded Sizing:Zone object and ultimately sets the minimum system OA flow rate. The field used in the question above, ""Design Specification Outdoor Air Object Name for Control" is for active control of the VAV damper minimum position to satisfy the zone OA requirement (this is a less common application).

HVACTemplate:Zone:VAV,
SPACE1-1,                !- Zone Name
VAV Sys 1,               !- Template VAV System Name
All Zones,               !- Template Thermostat Name
autosize,                !- Supply Air Maximum Flow Rate {m3/s}
,                        !- Zone Heating Sizing Factor
,                        !- Zone Cooling Sizing Factor
Constant,                !- Zone Minimum Air Flow Input Method
0.3,                     !- Constant Minimum Air Flow Fraction
,                        !- Fixed Minimum Air Flow Rate {m3/s}
,                        !- Minimum Air Flow Fraction Schedule Name
DetailedSpecification,   !- Outdoor Air Method
0.00,                    !- Outdoor Air Flow Rate per Person {m3/s}
0.0,                     !- Outdoor Air Flow Rate per Zone Floor Area {m3/s-m2}
0.0,                     !- Outdoor Air Flow Rate per Zone {m3/s}
HotWater,                !- Reheat Coil Type
,                        !- Reheat Coil Availability Schedule Name
Reverse,                 !- Damper Heating Action
,                        !- Maximum Flow per Zone Floor Area During Reheat {m3/s-m2}
,                        !- Maximum Flow Fraction During Reheat
,                        !- Maximum Reheat Air Temperature {C}
,                        !- Design Specification Outdoor Air Object Name for Control
,                        !- Supply Plenum Name
,                        !- Return Plenum Name
None,                    !- Baseboard Heating Type
,                        !- Baseboard Heating Availability Schedule Name
autosize,                !- Baseboard Heating Capacity {W}
SystemSupplyAirTemperature,  !- Zone Cooling Design Supply Air Temperature Input Method
,                        !- Zone Cooling Design Supply Air Temperature {C}
,                        !- Zone Cooling Design Supply Air Temperature Difference {deltaC}
SupplyAirTemperature,    !- Zone Heating Design Supply Air Temperature Input Method
50.0,                    !- Zone Heating Design Supply Air Temperature {C}
,                        !- Zone Heating Design Supply Air Temperature Difference {deltaC}
Office_OA;               !- Design Specification Outdoor Air Object Name for Sizing