> ## Documentation Index > Fetch the complete documentation index at: https://developers.portao3.com.br/llms.txt > Use this file to discover all available pages before exploring further. # Withdraw a trip's approval request > Withdraws the approval request of a trip. The request is canceled with the approvals service first, and the trip goes back to being reservable, so it can be sent for approval again or issued. Only an organization admin or the user who booked the trip, or sent it for approval, can withdraw it. A request that is still being created can't be withdrawn yet, and one that was already approved, denied or issued can't be withdrawn at all. The answer is `204 No Content` in every case that is not an error: read the trip to see where it is. Withdrawing a trip with no open request does nothing. ## OpenAPI ````yaml /api-reference/travel.openapi.json post /realms/{realmId}/organizations/{organizationId}/trips/{tripId}/request/cancel openapi: 3.0.3 info: title: Travel version: 1.0.0 description: >- Portão 3 travel API. Every endpoint requires a bearer token in the Authorization header (Authorization: Bearer ) unless its page states otherwise; see the Authentication guide. That requirement is not repeated per endpoint. Generated by tools/openapi from code (routes + security) and the hand-written spec (request/response bodies). Passenger directory, trips and the search proxy (air/hotel/bus/vehicle). Every route validates path, query and body through a zod Input class (`travel/src/domain/*/input`), which documents its parameters and body; responses are the named interfaces in `travel/src/domain/*/response.ts`. Confidence tiers: generated:typed=57 copied:manual=0 unknown=0. servers: - url: https://api.travel.v2.portao3.com.br/ description: production - url: https://api.travel.dev.3pers.com.br/ description: development security: [] tags: - name: Passengers - name: Trips - name: Air search - name: Hotel search - name: Bus search - name: Vehicle search paths: /realms/{realmId}/organizations/{organizationId}/trips/{tripId}/request/cancel: post: tags: - Trips summary: Withdraw a trip's approval request description: Withdraws the approval request of a trip. operationId: >- postRealmsByRealmIdOrganizationsByOrganizationIdTripsByTripIdRequestCancel parameters: - name: realmId in: path required: true description: |- ID of your realm. Format: `UUID` schema: type: string format: uuid example: f495ff0c-ab54-4f99-8e92-ca8682e4de9b - name: organizationId in: path required: true description: |- ID of the organization the trip belongs to. Format: `UUID` schema: type: string format: uuid example: c4bd3f21-dfbd-44e8-8055-68ba15bed410 - name: tripId in: path required: true description: >- ID of the trip whose approval request is withdrawn (24 hexadecimal characters). schema: type: string pattern: ^[0-9a-fA-F]{24}$ example: 6711b4c0d8e1a30012b7c9f2 requestBody: required: false content: application/json: schema: type: object properties: policyRequestId: description: >- ID of the approval request that ended. Only the approval service sends it; leave it out when you withdraw a request yourself. Format: `UUID` example: b7f1c0d2-4e3a-4f8b-9c21-7a6d5e4f3b2a type: string format: uuid responses: '204': description: No Content. The operation succeeded and the response has no body. '403': description: >- `TRAVEL_REQUESTER_OR_ADMIN_REQUIRED` — You can see the trip but you are neither an organization admin nor the user who booked it or sent it for approval. `TRIP_CALLER_FORBIDDEN` — This caller can't withdraw an approval request. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - TRAVEL_REQUESTER_OR_ADMIN_REQUIRED - TRIP_CALLER_FORBIDDEN description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - TRAVEL description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: TRAVEL_REQUESTER_OR_ADMIN_REQUIRED origin: TRAVEL message: >- Organization admin or the user who requested the approval required '404': description: >- `TRIP_NOT_FOUND` — No trip with this ID is visible to you in the organization: it doesn't exist, belongs to another organization, or you are neither an organization admin, a passenger on it nor the user who booked it. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - TRIP_NOT_FOUND description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - TRAVEL description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: TRIP_NOT_FOUND origin: TRAVEL message: Trip not found '409': description: >- `TRIP_REQUEST_IN_PROGRESS` — The approval request is still being created. Try again in a moment. `TRIP_APPROVAL_ALREADY_RESOLVED` — The request was already approved, denied or issued, so it can't be withdrawn. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - TRIP_REQUEST_IN_PROGRESS - TRIP_APPROVAL_ALREADY_RESOLVED description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - TRAVEL description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: TRIP_REQUEST_IN_PROGRESS origin: TRAVEL message: The approval request is still being created; try again shortly '422': description: >- `BAD_REQUEST` — A path parameter is not a valid ID or the body failed validation; `fields` lists each offending field. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - BAD_REQUEST description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - TRAVEL description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. fields: type: array description: >- One entry per invalid request field (validation errors only). items: type: object properties: field: type: string description: >- Path of the invalid field, e.g. `label` or `values[0].value`. example: label message: type: string description: Why the field was rejected. example: label is required code: type: string description: >- `_` — e.g. `LABEL_REQUIRED`, `TYPE_ONE_OF`, `VALUES_VALUE_TYPE_ERROR`. example: LABEL_REQUIRED values: type: array items: type: string description: >- The accepted values, when the field is an enumeration. required: - field - message - code required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: BAD_REQUEST origin: TRAVEL message: >- Bad Request: Your request is invalid or incomplete. Please make sure you are requesting with the right fields. fields: - field: policyRequestId message: Invalid UUID code: POLICYREQUESTID_UUID '503': description: >- `POLICY_EVALUATION_UNAVAILABLE` — The approvals service could not be reached, so the request was not withdrawn. Retry later. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - POLICY_EVALUATION_UNAVAILABLE description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - TRAVEL description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: POLICY_EVALUATION_UNAVAILABLE origin: TRAVEL message: >- Business policy evaluation temporarily unavailable, please retry. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.