Enroll and cancel contacts

POST/v1/sequences/{id}/enrollments

Enrolls the contacts in add and cancels the open enrollments of the contacts in remove, in one request: if any addition is invalid, nothing changes. Send add, remove or both, with at most 25 contact IDs in total; duplicate IDs are ignored, and an ID cannot be in both lists. The response has one result per contact: enrolled, already_enrolled, unenrolled, or no_active_enrollment for a removal with nothing open.

A contact already enrolled, paused included, is left as is; one whose earlier enrollment ended is enrolled again. Cancelling stops the contact’s remaining steps and leaves the enrollment readable with status CANCELLED. A paused sequence accepts enrollments and sends to them once it is activated; sending starts asynchronously.

Returns 400 sequence_not_published for a sequence that has never been published, and 400 invalid_configuration with invalidContacts naming each contact that cannot be enrolled and why. See Sequence errors.

Required scope: sequences:update

Rate limit category: Write

Path ParametersExpand Collapse

id: string

Unique identifier of the sequence.

Body ParametersJSONExpand Collapse

add: optional array of string

Contact IDs to enroll. Open enrollments are unchanged; contacts whose prior enrollment ended are enrolled again.

remove: optional array of string

Contact IDs to unenroll. Cancels open enrollments and preserves their history.

ReturnsExpand Collapse

SequenceUpdateEnrollmentsResponse object { results }

results: array of object { contactId, enrollmentId, outcome } or object { contactId, enrollmentId, outcome }

One result per distinct contact, additions first, then removals.

One of the following:

EnrollmentChanged object { contactId, enrollmentId, outcome }

contactId: string

ID of the contact.

enrollmentId: string

ID of the enrollment the outcome applies to.

outcome: "enrolled" or "already_enrolled" or "unenrolled"

enrolled created the enrollment, already_enrolled left an open one as is, unenrolled cancelled it.

One of the following:

"enrolled"

"already_enrolled"

"unenrolled"

NothingToCancel object { contactId, enrollmentId, outcome }

contactId: string

ID of the contact.

enrollmentId: unknown

Always null.

outcome: "no_active_enrollment"

The contact had no open enrollment to cancel.

Enroll and cancel contacts

curl https://api.lightfield.app/v1/sequences/$ID/enrollments \
    -H 'Content-Type: application/json' \
    -H 'Lightfield-Version: 2026-03-01' \
    -H "Authorization: Bearer $API_KEY" \
    -d '{}'

{
  "results": [
    {
      "contactId": "contactId",
      "enrollmentId": "enrollmentId",
      "outcome": "enrolled"
    }
  ]
}

Returns Examples

{
  "results": [
    {
      "contactId": "contactId",
      "enrollmentId": "enrollmentId",
      "outcome": "enrolled"
    }
  ]
}