Elasticsearch update a new mapping on index with default values - elasticsearch

Question

I am updating by my index with new properties in Elasticsearch and trying to add default vales for new created properties, i have tried the below approach , but the update query is failing with the following error message 'failed to create query: [nested] nested object under path [summaryTableColumns] is not of nested type
New Mapping
{
"properties": {
"subjectPropertyFields": {
"type": "nested",
"properties": {
"key": {
"type": "keyword"
},
"value": {
"type": "keyword"
}
}
},
"summaryTableColumns": {
"type": "nested",
"properties": {
"key": {
"type": "keyword"
},
"value": {
"type": "keyword"
}
}
}
}
}
Update query using painless that i have tried
{
"script": {
"source": "ctx._source.summaryTableColumns= params.summaryTableColumns",
"lang": "painless",
"params": {
"summaryTableColumns": [
{
"key": "Property Name",
"value": "name"
},
{
"key": "City",
"value": "city"
},
{
"key": "Distance",
"value": "propertyAddress"
},
{
"key": "Units",
"value": "units"
},
{
"key": "Built",
"value": "yearBuilt"
},
{
"key": "Occupancy",
"value": "occupancyAsOfDate"
},
{
"key": "Avg SF",
"value": "avgSf"
},
{
"key": "Avg Rent",
"value": "avgMarketRentSf"
},
{
"key": "Avg Rent/SF",
"value": "avgRentSf"
},
{
"key": "NA",
"value": "NA"
}
]
}
},
"query": {
"bool": {
"must_not": [
{
"nested": {
"path": "summaryTableColumns",
"query": {
"bool": {
"filter": {
"exists": {
"field": "summaryTableColumns"
}
}
}
}
}
}
],
"should": {
"bool": {
"must_not": {
"match": {
"templateName": "salesComps"
}
}
}
}
}
}
}
error i am facing
'failed to create query: [nested] nested object under path [summaryTableColumns] is not of nested type