[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [ExceptionDetails](./puppeteer.protocol.runtime.exceptiondetails.md) > [executionContextId](./puppeteer.protocol.runtime.exceptiondetails.executioncontextid.md) ## Protocol.Runtime.ExceptionDetails.executionContextId property Identifier of the context where exception happened. Signature: ```typescript executionContextId?: ExecutionContextId; ```