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In order to link a Cost Line to a campaign in The Trade Desk, the Supplier of the Cost Line must be linked to The Trade Desk. For more information, see Supplier Linking and Mapping.  | 
Cost Lines on the DSP grid can be linked to one or more campaigns in the Trade Desk, reducing the need to manually re-enter details across multiple platforms. Linking a campaign in The Trade Desk also creates a connection that allows delivery costs and metrics to flow from The Trade Desk to OneStrata.
The linked campaign in the Trade Desk can be a new campaign or an existing campaigns:
| Linking Option | Description | 
|---|---|
| Link to a new campaign in The Trade Desk | In OneStrata, upload a Cost Line to create a new campaign in The Trade Desk. The Cost Line is automatically linked to the newly created campaign.  | 
| Link to an existing campaign in The Trade Desk | In OneStrata, link a Cost Line to an existing campaign in The Trade Desk.  | 
To create a new campaign in The Trade Desk and link a Cost Line to the newly created campaign, do the following:
| Field Name | Action | |
|---|---|---|
Create Campaign / Existing Campaign  | Check that the Create Campaign option is selected. If not, select Create Campaign.  | |
Advertiser  | Search for an advertiser in The Trade Desk by entering at least three letters of the advertiser name. Then, select the desired advertiser.  | |
Campaign Type  | Select the type of the campaign: 
  | |
Only available if Campaign Type is Kokai Seed ID  | For a Kokai campaign, enter the identifier of the seed to attach to the campaign.  | |
Name  | Choose one of the following options: 
  | |
Budget Amount  | Choose one of the following options: 
  | |
Start Date  | Select a start date for the campaign.  | |
Optional End Date  | Optional: Select an end date for the campaign.  | |
Objective  | Select a campaign objective: 
  | |
Primary Channel  | Select a campaign channel. 
  | |
Primary Goal  | Select a campaign goal. 
  | 
To link a Cost Line to an existing campaign in The Trade Desk, do the following:
| Field Name | Action | 
|---|---|
Create Campaign / Existing Campaign  | Check that the Existing Campaign option is selected. If not, select Existing Campaign.  | 
Advertiser  | Search for an advertiser in The Trade Desk by entering at least three letters of the advertiser name. Then, select the desired advertiser.  | 
Campaign  | Search for a campaign in The Trade Desk by entering at least three letters of the campaign name. Then, select the desired campaign.  | 
Read-only Date Range  | The value of the Date Range field is automatically populated from the selected campaign and cannot be changed within OneStrata.  | 
Read-only Budget  | The value of the Budget field is automatically populated from the selected campaign and cannot be changed within OneStrata.  | 
To unlink a campaign in The Trade Desk from a Cost Line, follow the steps in Unlink an Entity From a Cost Line.
To update a linked campaign in The Trade Desk, follow the steps in Update an Entity Linked to a Cost Line.
To view the details of a linked campaign in The Trade Desk, follow steps 1-3 in View the Details of an Entity Linked to a Cost Line.
The View Upload widget displays the following information:
| Field Name | Description | 
|---|---|
| Advertiser | The advertiser of the campaign in The Trade Desk. | 
| Campaign Type | The type of the campaign in The Trade Desk. | 
| Name | The name of the campaign in The Trade Desk. | 
| Budget Amount | The budget of the campaign in The Trade Desk. | 
| Date Range | The date range of the campaign in The Trade Desk. | 
| Objective | The objective of the campaign in The Trade Desk. | 
| Primary Channel | The channel of the campaign in The Trade Desk. | 
| Primary Goal | The goal of the campaign in The Trade Desk. | 
To view the delivery metrics of a linked campaign in The Trade Desk, follow the steps in View the Delivery Metrics of an Entity Linked to a Cost Line.