PLANT EQUIPMENT OPERATION SCHEMES ERROR

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I have a problem with a simulation. The error message that is displayed is as follows:

program Version,EnergyPlus, Version 8.4.0-832e4bb9cb, YMD=2017.12.20 13:50,IDD_Version 8.4.0
   ************* IDF Context for following error/warning message:
   ************* Note -- lines truncated at 300 characters, if necessary...
   *************  33927 PlantEquipmentOperationSchemes,
   ************* indicated Name=Circuito_Datacenter Operation Schemes
   ************* Only last 4 lines before error line shown.....
   *************  33928   Circuito_Datacenter Operation Schemes,  !- Name
   *************  33929   PlantEquipmentOperation:CoolingLoad,    !- Control Scheme Object Type 1
   *************  33930   Circuito_Datacenter Cooling Operation Scheme, !- Control Scheme Name 1
   *************  33931   ;                                       !- Control Scheme Schedule Name 1
   ** Severe  ** IP: IDF line~33931 Error detected in Object=PLANTEQUIPMENTOPERATIONSCHEMES, name=CIRCUITO_DATACENTER OPERATION SCHEMES
   **   ~~~   ** Field [Control Scheme 1 Schedule Name] is required but was blank
   ** Warning ** IP: Note -- Some missing fields have been filled with defaults. See the audit output file for details.
   ** Severe  ** IP: Blank "required" fields found in input
   ** Severe  ** IP: Out of "range" values and/or blank required fields found in input
   **  Fatal  ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=3
   ..... Last severe error=IP: Out of "range" values and/or blank required fields found in input
   ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
   ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 3 Severe Errors; Elapsed Time=00hr 00min  1.40sec

Can someone help me?!