First configure ACL permissions correctly:
https://sonata-project.org/bundles/admin/master/doc/reference/security.html
Remember these 3 things explained in the link:
*Install the ACL tables: php app/console init:acl
*If you have Admin classes, you can install or update the related CRUD ACL rules (I HAD PROBLEMS NOT EXECUTING THIS ONE, REMEMBER TO RUN IT):
$ php app/console sonata:admin:setup-acl
*If you already have objects, you can generate the object ACL rules for each object of an admin:
$ php app/console sonata:admin:generate-object-acl
Install the ACL extension for Sonata Admin
https://github.com/coopTilleuls/CoopTilleulsAclSonataAdminExtensionBundle
Install using dev-master for the bundle
After installation, when creating a user in the construct function you have to set the permissions for the necessary admins without the master. For instance if this is the configuration in config.yml: security: handler: sonata.admin.security.handler.acl # acl security information information: ADMIN: [MASTER] GUEST: [VIEW, LIST] STAFF: [EDIT, LIST, CREATE] EDITOR: [OPERATOR, EXPORT] You have to avoid the Admin (Master) permission. If you don’t, the user could see all the objects of the Admins configured.