# Upload a bill attachment file and get its URL

Endpoint: POST /bills/upload
Version: 2.0.0
Security: oauth2ClientCredentials

## Header parameters:

  - `org_wallet_ref` (string)

  - `business_id` (string, required)

## Request fields (application/json):

  - `file` (string, required)
    Base64-encoded file content (no data URI prefix). Maximum supports a 10MB file.

  - `file_name` (string, required)
    Example: invoice.pdf

  - `content_type` (string, required)
    Example: application/pdf