Cancel outbound DTMF sequence | Voice Platform

Rate limit: Per command · Burst: 20 · Refill: 20 req/s

Cancel the active outbound DTMF sequence for this session. The gateway deletes the remaining sensitive plan before returning, so no later key or wait action can be scheduled. A key already submitted to the media layer may still finish.

With no active sequence the request is accepted and has no effect. No terminal webhook is emitted; the 202 response is the cancellation acknowledgement.

**Rate limit: Per command** · **Burst:** 20 · **Refill:** 20 req/s Cancel the active outbound DTMF sequence for this session. The gateway deletes the remaining sensitive plan before returning, so no later key or wait action can be scheduled. A key already submitted to the media layer may still finish. With no active sequence the request is accepted and has no effect. No terminal webhook is emitted; the 202 response is the cancellation acknowledgement.

Authentication

AuthorizationBearer

Application auth. Send Authorization: Bearer <app_uuid>:<api_key>. See Authentication for details.

Application auth. Send `Authorization: Bearer <app_uuid>:<api_key>`. See [Authentication](https://voice-platform.docs.buildwithfern.com/api/authentication) for details.

Path parameters

uuidstringRequired

Session UUID (format {5-char-prefix}-{uuid}).

Query parameters

operation_uuidstringOptionalformat: "uuid"

Client-supplied UUID to label this cancel operation; must be a valid lowercase RFC-4122 v4 UUID or the request is rejected with 400. A UUID is generated when omitted and echoed in the 202 response.

Response

Cancellation accepted.

operation_uuidstringformat: "uuid"

statusenum

Errors

400

Bad Request Error

401

Unauthorized Error

404

Not Found Error

409

Conflict Error

429

Too Many Requests Error

500

Internal Server Error

503

Service Unavailable Error