It is recommended to create a separate user group in Erply to restrict access to non-essential information, and prevent accidental data changes. Alternatively you can use any existing group with required permissions (admin group has all permissions by default).
Below is a list of settings this user group needs:
Create a new user and assign it to the previously confgured group.
We recommend checking the API integration box which allows you to use non-email username.
Make sure to select access to all locations.