ElasticSearch 5.2 Unknown key for a START_OBJECT in [script]. request - elasticsearch

Question

Hello I am trying to remove record by searching in nested data of array via script.
Is possible to remove data with using script for _delete_by_query ?
Version of elasticsearch 5.2
My request looks like
POST /test_index/_delete_by_query
{
"query": {
"bool": {
"must": [
{
"exists": {
"field":"userPermission"
}
}
]
}
},
"script":{
"inline":"""
for (int i = 0; i < ctx._source.userPermission.size(); i++) {
if(ctx._source.userPermission[i].id == '760100000-100000')
{
return true
}
}
return false
"""
}
}
I get an error:
{
"error": {
"type": "parsing_exception",
"reason": "Unknown key for a START_OBJECT in [script].",
"line": 1,
"col": 77
},
"status": 400
}
It is example of data:
{
"_index": "test_index",
"_type": "doc",
"_id": "AXXDZFKKgDFBfUY9kVS6",
"_score": 1,
"_source": {
"test_field": "Test",
"userPermission": [
{
"fullName": "Test 55",
"id": '760100000-100000'
},
{
"fullName": "Test33",
"id": 555
},
{
"fullName": "Test 1",
"id": 444
}
]
}
}

Answer 1

The delete by query endpoint doesn't support any script content. What you need to do is to use the update by query endpoint and the delete operation if the condition is satisfied:
POST /test_index/_update_by_query
{
"query": {
"bool": {
"must": [
{
"exists": {
"field":"userPermission"
}
}
]
}
},
"script":{
"inline":"""
for (int i = 0; i < ctx._source.userPermission.size(); i++) {
if(ctx._source.userPermission[i].id == '760100000-100000')
{
ctx.op = 'delete';
}
}
"""
}
}