The personalization variables this campaign's steps can use

Lists the custom and smart column tokens the campaign's steps can personalise with, deduplicated across the campaign's source lists (the first list that defines a column name wins, which is how values resolve at send time). Paste a token verbatim into a step's subject or body and it is substituted per lead when the message is sent. Columns whose name contains a brace or a pipe are skipped because they could never form a usable token. Built-in tokens such as {Contact First Name} are always available and are not listed here. Only the token owner's own campaigns resolve, and a deleted campaign answers 404. Rate limit: 30 requests/minute and 1,000/day per token owner, shared by every campaign, scheduled-send, campaign-template and knowledge-hub endpoint.

Errors:

• 404 CAMPAIGN_NOT_FOUND — No campaign with this id exists, it belongs to another account (including a campaign delegated to you or shared by your team's visibility settings), or it has been deleted.
• 422 VALIDATION_FAILED — campaignId is not a 24-character hex id.
• 429 RATE_LIMITED — More than 30 campaign requests in a minute, or 1,000 in a day, for this token owner (the bucket is shared by every /business/campaigns, /business/scheduled-sends, /business/campaign-templates and /business/knowledge-hubs call).
• 500 UNEXPECTED_ERROR — An unhandled failure; the detail stays in our logs and is never returned.

Requires one of the following token scopes: campaigns.