> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. # Ignoring operations, channels, or schemas > Learn how to use x-fern-ignore to exclude specific operations, channels, or schemas from AsyncAPI SDK generation. Use `x-fern-ignore` to exclude specific operations, channels, or schemas from SDK generation: **`asyncapi.yml`** ```yaml title="asyncapi.yml" {6-7, 13-14} operations: debugOperation: action: send channel: $ref: '#/channels/debug' x-fern-ignore: true summary: Debug operation (internal only) channels: internal/debug: address: internal/debug x-fern-ignore: true messages: DebugMessage: $ref: '#/components/messages/DebugMessage' ``` > Learn how to use x-fern-ignore to exclude specific operations, channels, or schemas from AsyncAPI SDK generation.