> ## Documentation Index
> Fetch the complete documentation index at: https://docs.narrative.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Duplicate Property Paths

> The same property path appears more than once in a properties array

## Error message

```
{context}: duplicate property paths: {paths}
```

Example: `dataset.fields[address].properties: duplicate property paths: city`

## When this error occurs

Each entry in a `properties` array must have a unique `path`. This error is raised when two or more entries share the same path within the same parent object node.

## Example: request that triggers this error

```json theme={null}
{
  "defaults": {
    "enabled_stats": ["value_count"]
  },
  "refresh": { "trigger": "manual" },
  "dataset": {
    "fields": [
      {
        "field_name": "address",
        "properties": [
          {
            "path": "city",
            "enabled_stats": ["value_count"]
          },
          {
            "path": "city",
            "enabled_stats": ["approx_count_distinct"]
          }
        ]
      }
    ]
  }
}
```

`city` appears twice in the `address` properties array.

## How to fix

Merge the duplicate entries into one:

```json theme={null}
{
  "field_name": "address",
  "properties": [
    {
      "path": "city",
      "enabled_stats": ["value_count", "approx_count_distinct"]
    }
  ]
}
```

## Related errors

* [DuplicateFieldNames](/reference/architecture/dataset-statistics/errors/duplicate-field-names) — same issue for top-level field names