---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/37000#article
headline: "37000: WhatsApp Voice: Call permission not granted by consumer"
url: https://www.twilio.com/docs/api/errors/37000
inLanguage: en
dateModified: 2026-03-11T20:01:16.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 37000: WhatsApp Voice: Call permission not granted by consumer

Log Type: APPLICATION

Log Level: ERROR

## Description

The business-initiated WhatsApp call failed because the consumer had not granted permission to initiate the call.

### Possible causes

The business-initiated WhatsApp call was placed to the consumer without the necessary call permission being accepted.

### Possible solutions

Ensure that call permission has been requested and accepted before initiating a call with the consumer.