---
page_type: error
code: 83601
message: "83601: Request StartTime and/or EndTime must be aligned to UTC day boundaries"
level: ERROR
product: Super SIM
---

## 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").