---
title: 1063: since must be an RFC3339 timestamp, e.g. 2026-08-14T00:00:00Z | API Docs
description: since must be an RFC3339 timestamp, e.g. 2026-08-14T00:00:00Z
---

since must be an RFC3339 timestamp, e.g. 2026-08-14T00:00:00Z. This is an HTTP 400: the request could not be parsed.

## Troubleshooting

- Check this endpoint’s request schema in the API reference; `param` in the response names the exact field at fault.
- Use an official SDK, which enforces required fields and types before the call is made.