I'm trying to search my Contacts by their `id` using the `IN` operator that is listed in API v2.3 reference (https://developers.intercom.com/intercom-api-reference/reference#section-accepted-operators
This is my current request payload:
```json
{
"query": {
"operator": "OR",
"value": [
{
"field": "id",
"operator": "IN",
"value": ["5fec4b003ba34a1198516369","5fec4b003ba34a11ab516481"]
}
]
}
}
```
but I get back an invalid response
```json
{
"type": "error.list",
"request_id": "000bcmd8o18tsjg9qfq0",
"errors":
{
"code": "invalid_field",
"message": "_id is not a valid search field"
}
]
}
```
It looks like that this field can't be used to search with the IN operator (this request works if I use `email` field, for example) despite what is written in the "Accepted Fields" chapter (https://developers.intercom.com/intercom-api-reference/reference#section-accepted-fields
If I try to search by ID with other operators (like a long list of OR conditions) it works.
```json
{
"query": {
"operator": "OR",
"value": :
{
"field": "id",
"operator": "=",
"value": "5fec4b003ba34a1198516369"
},
{
"field": "id",
"operator": "=",
"value": "5fec4b003ba34a11ab516481"
},
p...]
```
Also the limitation
> There’s a limit of max 15 filters for each AND or OR group
means that, even with the IN operator, we cannot search for more than 15 users (emails) at a time?
Thanks!