---
title: "Uploads and stores documents associated with an existing customer record"
method: POST
path: "/customers/{customerId}/documents"
tags: ["Document"]
---

# Uploads and stores documents associated with an existing customer record

`POST /customers/{customerId}/documents`

Upload and store documents related to an existing customer, typically those collected during Know Your Customer (KYC) or Know Your Business (KYB) verification processes

## Path parameters

- `customerId` string, required

## Request body

- DocumentCustomerDocumentUploadRequest
  - `fileName` string, required
  - `content` string, required — Needs to be Base64 encoded
  - `type` 'ID_DOCUMENT' | 'PROOF_OF_ADDRESS' | 'BUSINESS_DOCUMENTATION', required — Document type uploaded for customer

## Response `204`

NO_CONTENT

## Other responses

- `400` — Validation errors
- `403` — Incorrect permissions

---

[API](https://skmtc.net/modulrfinance/apis/modulr-api.md) · [All operations](https://skmtc.net/modulrfinance/apis/modulr-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/modulrfinance/modulr-api/revisions/cbd52524c8ef/schema)