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# BidStrategyUpdate

The request body for updating a bid strategy on an ad group or campaign.

```
object BidStrategyUpdate
```

## Discussion

Use `BidStrategyUpdate` as the `bidStrategy` field value when updating an ad group (`PUT /v1/adgroups/{id}` ([`Update an Ad Group`](/documentation/Apple-Ads-Platform-API/PUT-adgroups-_id_))) or a campaign (`PUT /v1/campaigns/{id}` ([`Update a Campaign`](/documentation/Apple-Ads-Platform-API/PUT-campaigns-_id_))). Include only the fields you want to change. The `bidStrategyType` must remain compatible with the parent campaign’s `billingEvent`. Changing the type to an incompatible combination returns a 400 error.

The `bidStrategyGoal` field can be changed together with `bidStrategyType`. Omitting one, or sending a goal that doesn’t match the type, returns an error. For ad group-specific behavior when the parent campaign uses an automated `bidStrategyType` (`MAX_CONVERSIONS` or `MAX_ENGAGEMENTS`), see [`AdGroupUpdate.BidStrategy`](/documentation/Apple-Ads-Platform-API/AdGroupUpdate/BidStrategy-data.dictionary).

### Example

```json
{
  "bidStrategyType": "MANUAL_CPT",
  "bidStrategyGoal": "TAP",
  "bid": {
    "amount": "2.50",
    "currency": "USD"
  }
}
```

## Topics

### Type Aliases

[`string BidStrategyUpdate.BidStrategyGoal`](/documentation/Apple-Ads-Platform-API/BidStrategyUpdate/BidStrategyGoal-data.typealias)

Optimization objective a bid strategy targets during Apple Ads auction competition.

[`string BidStrategyUpdate.BidStrategyType`](/documentation/Apple-Ads-Platform-API/BidStrategyUpdate/BidStrategyType-data.typealias)

Auction participation approach controlling how an ad group or campaign sets and adjusts bids.

---

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