title: RestRequest - Special characters - JSON parsing errors have occurred
body: <p>I have simple <strong>RESTRequest</strong> node. In response I'm sending JSON from SOAP-UI mockup.
  JSON looks like this:</p>
  
  <pre><code>{
      "SnapshotVersion": "43f4acca-b11a-4afe-b9bb-30af9864c3a0",
      "TotalExtraPrice": 0,
      "TotalPrice": 0,
      "Příliš žluťoučký Kůň": "úpěl dábelské ódy"
  }
  </code></pre>
  
  <p>If I send only first 3 elements, JSON parser doesn't throw a parser exception, but when is <code>"Příliš žluťoučký Kůň": "úpěl dábelské ódy"</code> element added, parser throws this message:</p>
  
  <pre><code>JSON
          Data
                  SnapshotVersion:CHARACTER:43f4acca-b11a-4afe-b9bb-30af9864c3a0
                  TotalExtraPrice:INTEGER:0
                  TotalPrice:INTEGER:0
          CHARACTER:Unconvertable character
  CHARACTER:JSON parsing errors have occurred
  </code></pre>
  
  <p>I tried <a href="http://www.mqseries.net/phpBB/viewtopic.php?p=399058&amp;sid=cbfdf7ef1fc26c96863272441a20b4ec" rel="nofollow noreferrer">this</a> fix, but it doesn't work:</p>
  
  <pre><code>SET OutputRoot.HTTPRequestHeader."Content-Type" = 'application/json; charset=utf-8';
  </code></pre>
  
  <p>I even tried send in SOAP-UI header <code>Content-Type: application/json; charset=utf-8</code></p>
  
  <p>My <strong>properties</strong> and <strong>HTTPResquestHeader</strong> look like this:</p>
  
  <pre><code>Properties
      MessageSet:CHARACTER:
      MessageType:CHARACTER:
      MessageFormat:CHARACTER:
      Encoding:INTEGER:546
      CodedCharSetId:INTEGER:1208
      Transactional:BOOLEAN:true
      Persistence:BOOLEAN:false
      CreationTime:TIMESTAMP:java.util.GregorianCalendar[time=1551971569190,areFieldsSet=true,areAllFieldsSet=false,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Europe/Prague",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=141,lastRule=java.util.SimpleTimeZone[id=Europe/Prague,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek=1,startTime=3600000,startTimeMode=2,endMode=2,endMonth=9,endDay=-1,endDayOfWeek=1,endTime=3600000,endTimeMode=2]],firstDayOfWeek=2,minimalDaysInFirstWeek=4,ERA=?,YEAR=2019,MONTH=2,WEEK_OF_YEAR=?,WEEK_OF_MONTH=?,DAY_OF_MONTH=7,DAY_OF_YEAR=?,DAY_OF_WEEK=?,DAY_OF_WEEK_IN_MONTH=?,AM_PM=1,HOUR=4,HOUR_OF_DAY=16,MINUTE=12,SECOND=49,MILLISECOND=190,ZONE_OFFSET=?,DST_OFFSET=?]
      ExpirationTime:INTEGER:-1
      Priority:INTEGER:0
      ReplyIdentifier:BLOB:[B@3613bded
      ReplyProtocol:CHARACTER:MQ
      Topic:UNKNOWN:null
      ContentType:CHARACTER:application/json; charset=utf-8
      IdentitySourceType:CHARACTER:
      IdentitySourceToken:CHARACTER:
      IdentitySourcePassword:CHARACTER:
      IdentitySourceIssuedBy:CHARACTER:
      IdentityMappedType:CHARACTER:
      IdentityMappedToken:CHARACTER:
      IdentityMappedPassword:CHARACTER:
      IdentityMappedIssuedBy:CHARACTER:
  HTTPRequestHeader
      Content-Type:CHARACTER:application/json; charset=utf-8
  </code></pre>
  
  <p>I think this must be still something with encoding or ccsid.</p>
  
  <hr>
  
  <p><strong>Edit 1:</strong></p>
  
  <p>IIB version: <strong>10.0.0.13</strong></p>
  
  <p><strong>Full Error message:</strong></p>
  
  <pre><code>ExceptionList
  RecoverableException
          File:CHARACTER:F:\build\slot2\S1000_P\src\DataFlowEngine\MessageServices\ImbDataFlowNode.cpp
          Line:INTEGER:1251
          Function:CHARACTER:ImbDataFlowNode::createExceptionList
          Type:CHARACTER:ComIbmMQInputNode
          Name:CHARACTER:API18099_O_CCGetV2#FCMComposite_1_6.vwg/skoda/eai/generic/in/mq/GEN90040_Generic_In_MQ#FCMComposite_1_1
          Label:CHARACTER:API18099_O_CCGetV2.GEN90040_Generic_In_MQ.MQ Input
          Catalog:CHARACTER:BIPmsgs
          Severity:INTEGER:3
          Number:INTEGER:2230
          Text:CHARACTER:Node throwing exception
          Insert
                  Type:INTEGER:14
                  Text:CHARACTER:API18099_O_CCGetV2.GEN90040_Generic_In_MQ.MQ Input
          RecoverableException
                  File:CHARACTER:F:\build\slot2\S1000_P\src\DataFlowEngine\SQLNodeLibrary\ImbComputeNode.cpp
                  Line:INTEGER:515
                  Function:CHARACTER:ImbComputeNode::evaluate
                  Type:CHARACTER:ComIbmComputeNode
                  Name:CHARACTER:API18099_O_CCGetV2#FCMComposite_1_5
                  Label:CHARACTER:API18099_O_CCGetV2.MapAndRouteBack
                  Catalog:CHARACTER:BIPmsgs
                  Severity:INTEGER:3
                  Number:INTEGER:2230
                  Text:CHARACTER:Caught exception and rethrowing
                  Insert
                          Type:INTEGER:14
                          Text:CHARACTER:API18099_O_CCGetV2.MapAndRouteBack
                  RecoverableException
                          File:CHARACTER:F:\build\slot2\S1000_P\src\DataFlowEngine\ImbRdl\ImbRdlStatementGroup.cpp
                          Line:INTEGER:792
                          Function:CHARACTER:SqlStatementGroup::execute
                          Type:CHARACTER:
                          Name:CHARACTER:
                          Label:CHARACTER:
                          Catalog:CHARACTER:BIPmsgs
                          Severity:INTEGER:3
                          Number:INTEGER:2488
                          Text:CHARACTER:Error detected, rethrowing
                          Insert
                                  Type:INTEGER:5
                                  Text:CHARACTER:.API18099_O_CCGetV2_MapAndRouteBack.Main
                          Insert
                                  Type:INTEGER:5
                                  Text:CHARACTER:43.4
                          Insert
                                  Type:INTEGER:5
                                  Text:CHARACTER:SET refOutBody = InputRoot.JSON.Data;
                          RecoverableException
                                  File:CHARACTER:F:\build\slot2\S1000_P\src\CommonServices\ImbConverter.cpp
                                  Line:INTEGER:628
                                  Function:CHARACTER:ImbConverterCPP::internalToUnicode
                                  Type:CHARACTER:
                                  Name:CHARACTER:
                                  Label:CHARACTER:
                                  Catalog:CHARACTER:BIPmsgs
                                  Severity:INTEGER:3
                                  Number:INTEGER:2135
                                  Text:CHARACTER:Unconvertable character
                                  Insert
                                          Type:INTEGER:5
                                          Text:CHARACTER:f8
                                  Insert
                                          Type:INTEGER:5
                                          Text:CHARACTER:50f8ed6c699a209e6c759df375e86bfd204bf9f2
                                  Insert
                                          Type:INTEGER:2
                                          Text:CHARACTER:1208
  </code></pre>
  
  <p>Error message is thrown after I'm doing some mapping with badly parsed json message.</p>