An ad group simulation. Supported combinations of advertising channel type, simulation type and simulation modification method is detailed below respectively.

1. SEARCH - CPC_BID - DEFAULT

2. SEARCH - CPC_BID - UNIFORM

3. SEARCH - TARGET_CPA - UNIFORM

4. SEARCH - TARGET_ROAS - UNIFORM

5. DISPLAY - CPC_BID - DEFAULT

6. DISPLAY - CPC_BID - UNIFORM

7. DISPLAY - TARGET_CPA - UNIFORM

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/resources/ad_group_simulation.proto)

| Fields ||
|---|---|
| ## `ad_group_id` | `int64` Output only. Ad group id of the simulation. |
| ## `end_date` | `string` Output only. Last day on which the simulation is based, in YYYY-MM-DD format |
| ## `modification_method` | `https://developers.google.com/google-ads/api/reference/rpc/v26/SimulationModificationMethodEnum.SimulationModificationMethod` Output only. How the simulation modifies the field. |
| ## `point_list` Union field. List of simulation points. `point_list` can be only one of the following: ||
| ### `cpc_bid_point_list` | `https://developers.google.com/google-ads/api/reference/rpc/v26/CpcBidSimulationPointList` Output only. Simulation points if the simulation type is CPC_BID. |
| ### `cpv_bid_point_list` | `https://developers.google.com/google-ads/api/reference/rpc/v26/CpvBidSimulationPointList` Output only. Simulation points if the simulation type is CPV_BID. |
| ### `target_cpa_point_list` | `https://developers.google.com/google-ads/api/reference/rpc/v26/TargetCpaSimulationPointList` Output only. Simulation points if the simulation type is TARGET_CPA. |
| ### `target_roas_point_list` | `https://developers.google.com/google-ads/api/reference/rpc/v26/TargetRoasSimulationPointList` Output only. Simulation points if the simulation type is TARGET_ROAS. |
| ## `resource_name` | `string` Output only. The resource name of the ad group simulation. Ad group simulation resource names have the form: `customers/{customer_id}/adGroupSimulations/{ad_group_id}~{type}~{modification_method}~{start_date}~{end_date}` |
| ## `start_date` | `string` Output only. First day on which the simulation is based, in YYYY-MM-DD format. |
| ## `type` | `https://developers.google.com/google-ads/api/reference/rpc/v26/SimulationTypeEnum.SimulationType` Output only. The field that the simulation modifies. |