How to fix Client found response content type of ”, but expected ‘text/xml’

While running Integration map from Salesforce to AX we might encounter blank response received but expected text/xml.
In current use case existing user was deactivated and new user was added into salesforce.
To fix this kind of issue we can follow below steps:

1. Login to the salesforce environment
2. Go to setup
   
3. Following screen will open and go to quick find and type “Outbound Message”
   
4. Following screen will open click on continue
   
5. Then you will see the outbound message list
   
6. Click on edit and change user name
   In this way we can fix the blank response issue in salesforce.