# enum RoadblockingType (v202505)

**Service** **ForecastService** [LineItemService](https://developers.google.com/ad-manager/api/reference/v202505/LineItemService.RoadblockingType) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202505/LineItemTemplateService.RoadblockingType) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202505/ProposalLineItemService.RoadblockingType) **Dependencies** [LineItemSummary](https://developers.google.com/ad-manager/api/reference/v202505/ForecastService.LineItemSummary) [ProposalLineItem](https://developers.google.com/ad-manager/api/reference/v202505/ForecastService.ProposalLineItem) ▼ **RoadblockingType**

Describes the roadblocking types.

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Namespace
:
    `https://www.google.com/apis/ads/publisher/v202505`

| Enumeration | Description |
|---|---|
| `ONLY_ONE` | Only one creative from a line item can serve at a time. |
| `ONE_OR_MORE` | Any number of creatives from a line item can serve together at a time. |
| `AS_MANY_AS_POSSIBLE` | As many creatives from a line item as can fit on a page will serve. This could mean anywhere from one to all of a line item's creatives given the size constraints of ad slots on a page. |
| `ALL_ROADBLOCK` | All or none of the creatives from a line item will serve. This option will only work if served to a GPT tag using SRA (single request architecture mode). |
| `CREATIVE_SET` | A master/companion [CreativeSet](https://developers.google.com/ad-manager/api/reference/v202505/CreativeSetService.CreativeSet) roadblocking type. A [LineItem.creativePlaceholders](https://developers.google.com/ad-manager/api/reference/v202505/ForecastService.LineItem#creativePlaceholders) must be set accordingly. |