# invalid_line_type

**HTTP 400** · type `invalid_request_error`

## When

A line type other than `product`, `service`, `custom`, or `text`, `heading` included.

## Fix

Use one of the four.

## Where it comes from

- `POST /v1/invoices`: Create an invoice
- `PATCH /v1/invoices/{id}`: Update an invoice

[All errors](/errors)