---
title: "Upload bill attachment"
method: POST
path: "/companies/{companyId}/connections/{connectionId}/push/bills/{billId}/attachments"
tags: ["Bills"]
---

# Upload bill attachment

`POST /companies/{companyId}/connections/{connectionId}/push/bills/{billId}/attachments`

The *Upload bill attachment* endpoint uploads an attachment and assigns it against a specific `billId`.

[Bills](https://docs.codat.io/sync-for-payables-api#/schemas/Bill) are invoices that represent the SMB's financial obligations to their supplier for a purchase of goods or services.

**Integration-specific behavior**

For more details on supported file types by integration see [Attachments](https://docs.codat.io/sync-for-payables-api#/schemas/Attachment).

## Response `200`

Success

## Other responses

- `400` — The request made is not valid.
- `401` — Your API request was not properly authorized.
- `402` — An account limit has been exceeded. The type of limit is described in the error property: - You have exceeded the 50-company limit that applies to a Free plan. Delete any companies you no longer need and retry the request. - The requested sync schedule is not allowed. You requested an hourly sync schedule but this functionality is not included in the Free plan. - Your Free account is older than 365 days and has expired. Contact support@codat.io.
- `403` — You are using an outdated API key or a key not associated with that resource.
- `404` — One or more of the resources you referenced could not be found. This might be because your company or data connection id is wrong, or was already deleted.
- `429` — Too many requests were made in a given amount of time. Wait a short period and then try again.
- `500` — There is a problem with our server. Please try again later.
- `503` — The Codat API is temporarily offline for maintenance. Please try again later.

---

[API](https://skmtc.net/codatio/apis/sync-for-payables.md) · [All operations](https://skmtc.net/codatio/apis/sync-for-payables/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/codatio/sync-for-payables/revisions/06163dffa75f/schema)