[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Target](./puppeteer.protocol.target.md) > [SendMessageToTargetRequest](./puppeteer.protocol.target.sendmessagetotargetrequest.md) > [targetId](./puppeteer.protocol.target.sendmessagetotargetrequest.targetid.md) ## Protocol.Target.SendMessageToTargetRequest.targetId property Deprecated. Signature: ```typescript targetId?: TargetID; ```