[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [LayerTree](./puppeteer.protocol.layertree.md) > [CompositingReasonsResponse](./puppeteer.protocol.layertree.compositingreasonsresponse.md) > [compositingReasonIds](./puppeteer.protocol.layertree.compositingreasonsresponse.compositingreasonids.md) ## Protocol.LayerTree.CompositingReasonsResponse.compositingReasonIds property A list of strings specifying reason IDs for the given layer to become composited. Signature: ```typescript compositingReasonIds: string[]; ```