[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [LayerTree](./puppeteer.protocol.layertree.md) > [CompositingReasonsRequest](./puppeteer.protocol.layertree.compositingreasonsrequest.md) ## Protocol.LayerTree.CompositingReasonsRequest interface Signature: ```typescript export interface CompositingReasonsRequest ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [layerId](./puppeteer.protocol.layertree.compositingreasonsrequest.layerid.md) | [LayerId](./puppeteer.protocol.layertree.layerid.md) | The id of the layer for which we want to get the reasons it was composited. |