1. Enabling Prestashop’s WebServices
From the Prestashop’s Administration Panel select: Advanced Parameters / Webservice.
Enabling “Enable PrestaShop’s WebService” and Save.
2. Add a new Access Key
Click on “Add a new Access Key”
Click on “Create” and save the Key on Qapla’.
Click on the first checkbox “View (GET)” to only assign the access permissions to read all data.
Save it.
3. Write permissions to update orders
The writing of the status must be enabled in the Webservice Permissions on Prestashop.