---
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"@id": https://www.twilio.com/docs/api/errors/64016#article
headline: "64016: Pay: Invalid Action URL"
url: https://www.twilio.com/docs/api/errors/64016
inLanguage: en
dateModified: 2026-03-11T22:03:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
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  name: Twilio
---

# 64016: Pay: Invalid Action URL

Log Type: APPLICATION

Log Level: ERROR

## Description

A 64016 Error is an indication there is something wrong with the value provided for the action parameter.

### Possible causes

* Action URL does not use https://

### Possible solutions

* Start your action URL with "https://"