StartCampaign
## Activates a campaign that was created via **Create**.
Call this after **Create** (and after any **UpdateSequence** / **UpdateSchedule** / **UpdateAccounts** configuration) to start running the campaign. The campaign must have a valid sequence and at least one connected LinkedIn sender account.
### Query Parameters
- **campaignId** _(long, required)_: The ID of the campaign to activate.
### Errors
- **400**: Campaign is in an invalid status, the schedule is invalid, or the lead list / accounts are not usable.
- **404**: Campaign does not exist.
Headers
X-API-KEY
API key header using this scheme. Example: “X-API-KEY: {API_KEY}”
Query parameters
campaignId
(Required) The id of the campaign to activate.

