Summary

A Jira automation rule fails to update a confluence page with the following body:

{
  "id": "{{createdPage.id}}",
  "status": "current",
  "title": "{{createdPage.title}}",
  "body": {
    "representation": "storage",
    "value": "{{issue.description}}"
  },
  "version": {
    "number": 2
  }
}

Diagnosis

The send web request fails with the following error: 

Send web request
Error publishing web request. Response HTTP status:
400
Error response HTTP body:
{"errors":[{"status":400,"code":"INVALID_MESSAGE","title":"Invalid message","detail":null}]}

Cause

The rule failed due to special characters in the description field.

Solution

To escape/encode these characters and copy the description as it is into the page, please replace the smart value for the description with the following smart value:

"{{issue.description.htmlEncode}}"