---
page_type: error
code: 35117
message: "35117: Scheduling does not support this timestamp"
level: ERROR
product: Programmable SMS
---

## Description

SendAt time must be between 300 seconds and 35 days (3024000 seconds) in the future, inclusive.

### Possible Causes

Scheduler currently doesn't support scheduling a message at a fixed time less that 5 minutes from now, or more than 35 days in the future.

### Possible Solutions

Verify that the SendAt parameter is using "\[YYYY]-\[MM]-\[DD]T\[HH]:\[MM]:\[SS]Z" format (in UTC).