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Yes! If the allowCustom option is set to true, users have the ability to add custom fields that are not defined in the data template. All custom fields are stored under the `$custom` object as a key-value pair. If you have a custom field called `ip_address`, for example, the `$custom` object might look something like this:
[
{
"id": "12",
"name": "Taylor",
"failure-note": "Avon",
"$custom": {
"ip_address": "192.452.243.214"
},
"sign": "Ooze",
"shield-color": "Red"
}
]