[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Accessibility](./puppeteer.protocol.accessibility.md) > [AXValueSource](./puppeteer.protocol.accessibility.axvaluesource.md) > [invalidReason](./puppeteer.protocol.accessibility.axvaluesource.invalidreason.md) ## Protocol.Accessibility.AXValueSource.invalidReason property Reason for the value being invalid, if it is. Signature: ```typescript invalidReason?: string; ```