Problem
 

Extensiv Integration Manager is raising the following alert when trying to mark your orders as shipped:

Subject: Error adding tracking to Tracking Extension
Message: Could not add tracking data to order: XXXXXX woocommerce_rest_cannot_create: Sorry, you are not allowed to create resources.

Solution 1

This issue is usually caused because your WooCommerce API user is not an administrator. To fix this:
 

1. Go to WooCommerce > Settings > Advanced > REST API
    
2. Click on the API description you previously setup
    
3. Select a different user who has Administrator access.
    

Solution 2

This issue can also be caused by your WooCommerce server settings blocking or removing certain header data required by the WooCommerce API.
 

To solve this issue, you must correct the Basic Auth header. In Apache this can be done using a rewrite rule in either your Apache config file, or in the WooCommerce .htaccess file:

 

RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

This article explains the issue and several possible solutions: https://github.com/WP-API/Basic-Auth/issues/35