Trying to rename a field, getting "object mapping for [<name of field>] tried to parse field [<name of field>] as object, but found a concrete value

[Casie_Schuller]

Hi,

I'm trying to rename data that is in this shape:

using this:

POST r_xair_signals-2020-06/_update/2020-06-15T22:23:00Z_-1344027716
{
  "doc" : {
        "Customer ImpactedNested" : "CustomerImpactedNested"
    }
}

But I'm getting:

"type": "mapper_parsing_exception",
    "reason": "object mapping for [Customer ImpactedNested] tried to parse field [Customer ImpactedNested] as object, but found a concrete value"

Any ideas?

Thanks!