Update Contact Variables
Merge variables into a contact’s and/or its company’s variables.
Upsert semantics: provided keys are written, other keys are kept. If the contact (or its company) is not yet linked to your organization, the link is created so the variables can be stored — writing only company variables still links the contact.
Each scope holds at most 200 variables. A null value clears the variable but keeps the key counting toward the limit; use the DELETE endpoint to remove a key and free its slot.
Requires the contacts:write scope on the API key.
Authorizations
Bearer API key issued from Settings → Developers.
Path Parameters
ID of the contact.
Body
Update Contact Variables payload