---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/83601#article
headline: "83601: Request StartTime and/or EndTime must be aligned to UTC day boundaries"
url: https://www.twilio.com/docs/api/errors/83601
inLanguage: en
dateModified: 2026-03-11T22:03:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 83601: Request StartTime and/or EndTime must be aligned to UTC day boundaries

Log Type: APPLICATION

Log Level: ERROR

## Description

Certain requests for Usage Records can only be made with StartTime and EndTime parameters that align to midnight UTC (e.g. "2021-07-15T00:00:00Z").

### Possible causes

* This happens if you request Usage Records with StartTime or EndTime parameters that do not fall on a day cutoff (i.e. midnight UTC) for certain UsageRecord requests.

### Possible solutions

* Adjust your StartTime or EndTime parameters so that they are at midnight UTC (e.g. "2021-07-15T00:00:00Z").