---
title: "Validate Bulk Send CSV"
method: POST
path: "/api/v1/bulk_sends/validate_csv"
tags: ["Bulk Send"]
---

# Validate Bulk Send CSV

`POST /api/v1/bulk_sends/validate_csv`

Validates a Bulk Send CSV file before creating the Bulk Send. It will check the structure of the CSV and the data it contains, and return any errors found.

## Request body

- BulkSendCsvRequest
  - `template_ids` string[], required — Specify one or more templates to generate a single blank CSV file that will contain available columns for your recipient data. The template_ids[] parameter is an array of template IDs (e.g.,`/?template_ids[]=5a67dbd7-928a-4ea0-a7e2-e476a0eb045f&template_ids[]=d7315111-c671-4b15-8354-c9a19bbaefa0`). Each ID should be a separate parameter in the query string.
  - `bulk_send_csv` string, required — A RFC 4648 base64 string of the template CSV file to be validated.

## Response `200`

successful

- BulkSendValidateCsvResponse — Validated bulk send CSV response with defaults applied
  - `bulk_send_csv` string, required — Base64-encoded CSV content
  - `template_ids` string[], required
  - `skip_row_errors` boolean
  - `api_application_id` string, uuid, nullable
  - `name` string
  - `subject` string
  - `message` string
  - `apply_signing_order` boolean

## Other responses

- `401` — unauthorized
- `422` — unprocessable entity
- `429` — rate limit exceeded

---

[API](https://skmtc.net/signwell/apis/signwell-developer-api.md) · [All operations](https://skmtc.net/signwell/apis/signwell-developer-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/signwell/signwell-developer-api/revisions/debef5796b62/schema)