...
Obtain API Credentials:
Herman Miller users need a 3rd party API username and password to enter in the e-manage|ONE Administrator.
To obtain the Web Service API Username and Password from the Herman Miller Order Manager:
If you do not have an admin login, select a user with permissions to create and send purchase orders, get acknowledgments, shipments, invoices, and A/R statements.
The selected user should log in to Order Manager, navigate to their profile, and go to “Development Center” to find the API username and password. Check Also make sure that the user has “Order Manager” added to their permissions in the Herman Miller web portal.
...