# invalid_alert_time

> Signal webhook: the alert's time can't be read.

Source: https://tickwire.io/docs/errors/invalid_alert_time/

HTTP 400, 422. Nothing reached the broker.

**Likely causes:**

- time is not an ISO 8601 time or a Unix time.
- time has no timezone. Tickwire never assumes UTC.

**What to do:** Use `"time": "{{timenow}}"`, which ends in Z. Nothing was sent.

**Retry:** No. The same request gets the same answer; change something first.

Listed under [Signal webhooks (TradingView)](https://tickwire.io/docs/errors/#signal-webhooks-tradingview) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.