---
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headline: "83701: Data Session Establishment Failed Due To Internal Error"
url: https://www.twilio.com/docs/api/errors/83701
inLanguage: en
dateModified: 2026-03-11T22:03:37.000Z
author:
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  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 83701: Data Session Establishment Failed Due To Internal Error

Log Type: TWILIO

Log Level: ERROR

## Description

An unexpected error occurred while establishing a Data Session for your SIM. This is usually a transient error and should resolve itself in time.

### Possible causes

* An unexpected error occurred in setting up a Data Session for your SIM.

### Possible solutions

* Retry connecting to the Network from your device.
* If this issue persists for your SIM, please contact Twilio Support.