An ad group criterion simulation. Supported combinations of advertising channel type, criterion type, simulation type, and simulation modification method are detailed below respectively. Hotel AdGroupCriterion simulation operations starting in V5.

1. DISPLAY - KEYWORD - CPC_BID - UNIFORM
2. SEARCH - KEYWORD - CPC_BID - UNIFORM
3. SHOPPING - LISTING_GROUP - CPC_BID - UNIFORM
4. HOTEL - LISTING_GROUP - CPC_BID - UNIFORM
5. HOTEL - LISTING_GROUP - PERCENT_CPC_BID - 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_criterion_simulation.proto)

| Fields ||
|---|---|
| ## `ad_group_id` | `int64` Output only. AdGroup ID of the simulation. |
| ## `criterion_id` | `int64` Output only. Criterion 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. |
| ### `percent_cpc_bid_point_list` | `https://developers.google.com/google-ads/api/reference/rpc/v26/PercentCpcBidSimulationPointList` Output only. Simulation points if the simulation type is PERCENT_CPC_BID. |
| ## `resource_name` | `string` Output only. The resource name of the ad group criterion simulation. Ad group criterion simulation resource names have the form: `customers/{customer_id}/adGroupCriterionSimulations/{ad_group_id}~{criterion_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. |