> ## Documentation Index
> Fetch the complete documentation index at: https://docs.serial.okos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Add Attachment

> Add an attachment to the work order. Work order must be in the `DRAFT` state. One attachment can be added per request. Attachments can be `IMAGE`, `FILE`, or `TEXT` (corresponding to the same data types in Serial).