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# ActivityDetail.Changes

A single field change entry, capturing the field name and its before and after values.

```
object ActivityDetail.Changes
```

## Discussion

Each entry in the `changes` array describes a single field that changed during the activity.

### Example

```json
{
  "field": "status",
  "oldValues": ["PAUSED"],
  "newValues": ["ENABLED"]
}
```

The `changes` field is the array field on the parent [`ActivityDetail`](/documentation/Apple-Ads-Platform-API/ActivityDetail) object: `ChangeDetails` holds a `details` array of `ActivityDetail` objects, and each `ActivityDetail` groups the field-level changes that share a common activity context in this `changes` array.

---

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