The error "You are not authorized to set a database quota" is received when registering Lotus Notes users in Lotus Domino using the ADSync feature.
ADSync has a registration policy assigned, but the registration policy does not have database quotas enabled. From the Notes Administration client you are able to successfully register users in Domino without using ADSync.
Increased permissions are needed when registering users with ADSync within Lotus Domino.
Resolving the problem
You must be granted at least the minimum administrators permission needed to successfully register users with ADSync.
- From the IBM Lotus Domino Administrator, click the Configuration tab, and open the Server document
- Click the Security tab.
- In the Administrators section, you need to be added to the "Database Administrators" field in the Security section of the Server Document.
IBM Lotus Domino information center topic: