Sample Azure Policy rule for a list of allowed tag numeric values

tag-notIn-numeric-policy-rule.json

"parameters": {
  "tagAllowedValues": {
    "type": "Array", // You can provide allowed tag values as numerics  ["1", "2", "3"]. Just remember that they are still treated as strings
    "metadata": {
      "displayName": "Tag allowed values",
      "description": "List of allowed options"
    }
  }
  // Other policy parameters...
},
"policyRule": {
  // Rule logic...
}