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System users represent servers or software that make API calls to assets owned or managed by a Business Manager
to add a system user to your Business Manager, follow this guide Add System Users to Your Business Manager
Go to Business Settings
Below Users, click System Users.
Click Add New System User
Give a name to the system user, give him Admin access and click Create System User
Assign your app as Assets to the user created and give the user full control
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Generate Permanent token
Go to Business Settings of your Business Manager
Below Users, click System Users.
Select the user created in the previous step
click Generate New Token
select your app
Make sure you have checked the “Available permissions”: whatsapp_business_messaging, whatsapp_business_management
click Generate Token
save and store the generated token in the connector configuration on MongoDB
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