Nested type mapping error

Hi All,
I am facing a problem.How to do mapping of making a object of nested
type.I* only wants itemResults object of nested type.*

my document structure is -

{
"_id": "inspectionresults-07d864fd-76ec-427a-a1c6-b70e420ce3d8",
"_rev": "12-64c44ddcfcd477dfa86cdb9d3c659748",
"sectionResults": [

   {
       "SectionName": "More Details",
       "itemResults": [
           
           {
               "InspectionItem": "Launch Month",
               "ItemInfo": ""
               
           }
       ]
   }

]
}

and my query is -
PUT realtek_release_v6_nestedsearch/_mapping
{
"realtek_release_v6_nestedsearch":{
"properties": {
"sectionResults":{
"type": "object",
"properties": {
"itemResults":{
"type": "nested"
}
}
}
}
}
}

error is - "nested object under path [sectionResults] is not of nested
type"

please send me query according to my document structure.i only wants
itemResults object of nested type
.

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/7e301db9-8160-475c-90f9-42ae87dcb748%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Is there anyone to help me about the above problem?...please help me..

Thanks in advance,

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/098e9176-fd1c-473c-9ca3-9d62de679ee9%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.