> ## Documentation Index > Fetch the complete documentation index at: https://docs.fuseai.com/llms.txt > Use this file to discover all available pages before exploring further. # Edit a queued send's copy or time before it goes out > Edits a queued send before it goes out. Send any of `subject`, `body` and `scheduledAt`; omitted fields keep the queued row's current values. IMPORTANT: the edit is not an in-place update - the row you addressed is marked `overwritten` and a NEW queued row carries the content forward, so the response returns the new `id` (and the old one as `replacedSendId`) and any further edit must address the new id. Only a send still waiting to go out can be edited: a row in `scheduled` or `approval_required`, with a send time. Anything else - sent, skipped, stopped, already overwritten, replied or failed - answers 409. Only the owner of the send's campaign may edit it. 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` `SCHEDULED_SEND_NOT_FOUND` — No queued send with this id exists, or it belongs to a campaign you do not own. - `409` `SCHEDULED_SEND_NOT_EDITABLE` — The send is no longer waiting to go out (sent, skipped, stopped, already overwritten, replied or failed), or it carries no send time. - `422` `VALIDATION_FAILED` — Empty body, unknown key, a subject or body over its length cap, or a scheduledAt that is not an ISO 8601 date-time; `param` names the field. - `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. ## OpenAPI ````yaml /openapi.json patch /business/scheduled-sends/{sendId} openapi: 3.1.0 info: title: Fuse Business API version: 1.0.0 description: >- External API for lists, campaigns, prospect search and contacts. Authenticate with your API token as HTTP Basic. All paths are under /api/v1. servers: - url: https://api.tryfuse.ai/api/v1 description: Production security: - basicAuth: [] tags: - name: Lists - name: Custom columns - name: Smart columns - name: Exports - name: Campaigns - name: Knowledge hubs - name: Analytics - name: Website intent - name: Account - name: Prospect search - name: Campaign steps - name: Scheduled sends - name: Campaign templates - name: Agents - name: Research - name: Company search - name: Saved searches - name: Folders - name: Contacts paths: /business/scheduled-sends/{sendId}: patch: tags: - Scheduled sends summary: Edit a queued send's copy or time before it goes out description: >- Edits a queued send before it goes out. Send any of `subject`, `body` and `scheduledAt`; omitted fields keep the queued row's current values. IMPORTANT: the edit is not an in-place update - the row you addressed is marked `overwritten` and a NEW queued row carries the content forward, so the response returns the new `id` (and the old one as `replacedSendId`) and any further edit must address the new id. Only a send still waiting to go out can be edited: a row in `scheduled` or `approval_required`, with a send time. Anything else - sent, skipped, stopped, already overwritten, replied or failed - answers 409. Only the owner of the send's campaign may edit it. 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` `SCHEDULED_SEND_NOT_FOUND` — No queued send with this id exists, or it belongs to a campaign you do not own. - `409` `SCHEDULED_SEND_NOT_EDITABLE` — The send is no longer waiting to go out (sent, skipped, stopped, already overwritten, replied or failed), or it carries no send time. - `422` `VALIDATION_FAILED` — Empty body, unknown key, a subject or body over its length cap, or a scheduledAt that is not an ISO 8601 date-time; `param` names the field. - `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. operationId: updateScheduledSend parameters: - name: sendId in: path required: true description: >- The queued send's id (the _id of a GET /business/campaigns/{campaignId}/scheduled-sends row, 24-character hex ObjectId). schema: type: string description: >- The queued send's id (the _id of a GET /business/campaigns/{campaignId}/scheduled-sends row, 24-character hex ObjectId). requestBody: required: true content: application/json: schema: type: object properties: subject: type: string maxLength: 500 description: >- Replacement subject (up to 500 characters, may be empty). Omit to keep the queued row's current subject. body: type: string maxLength: 20000 description: >- Replacement message body (up to 20000 characters; {Variable} tokens substitute at send time). Omit to keep the queued row's current body. scheduledAt: type: string description: >- New ISO 8601 send time (UTC). Omit to keep the queued row's current send time. responses: '200': description: Success headers: RateLimit-Limit: schema: type: integer description: Requests permitted in the current window. RateLimit-Remaining: schema: type: integer description: Requests remaining in the current window. RateLimit-Reset: schema: type: integer description: Seconds until the current window resets. content: application/json: schema: type: object properties: send: type: object properties: id: type: - string - 'null' description: >- Id of the NEW queued row that carries the edit; address this one from now on. replacedSendId: type: string description: The row you addressed, now marked overwritten. status: type: string enum: - approval_required - scheduled - sent - skipped - stopped - overwritten description: The queue bucket the edit stays in. subject: type: string description: >- The subject now on the row (the previous one when you omitted it). scheduledAt: type: string format: date-time description: >- The send time now on the row (the previous one when you omitted it). required: - id - replacedSendId - status - subject - scheduledAt required: - send example: send: id: 6a8dce64a4566f4f2454bd38 replacedSendId: 6a8da7adafc401ca94530e14 status: scheduled subject: Quick question about BrightPay (edited) scheduledAt: '2026-08-26T00:00:00.000Z' '400': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '422': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' security: - basicAuth: [] components: schemas: Error: type: object properties: error: type: object properties: code: type: string message: type: string param: type: - string - 'null' doc_url: type: - string - 'null' request_id: type: - string - 'null' required: - code - message required: - error securitySchemes: basicAuth: type: http scheme: basic description: >- Your API token (`af_…`) as the Basic-auth username, with an empty password. ````