[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [ServiceWorker](./puppeteer.protocol.serviceworker.md) > [DeliverPushMessageRequest](./puppeteer.protocol.serviceworker.deliverpushmessagerequest.md) > [registrationId](./puppeteer.protocol.serviceworker.deliverpushmessagerequest.registrationid.md) ## Protocol.ServiceWorker.DeliverPushMessageRequest.registrationId property Signature: ```typescript registrationId: RegistrationID; ```