---
agentTools:
  projectIndex: https://developer.bill.com/llms.txt
---

# General ledger classification improvements in bills

When you create or update a bill, you can now set the `chartOfAccountId` field as the BILL-generated ID of the chart of accounts for the bill.

See [POST /v3/bills](https://developer.bill.com/reference/createbill) in the API reference for more information.