After installing Odoo 10 and some of its modules. I successfuly created a new product with the Administrator account. Afterwards new users signed in via the web site to create their accounts. At the end I provided some of them the full access rights, so that they will be able to manage the system:
But trying to add a new product with any of them fails with the following error message:
Error while validating constraint
The requested operation cannot be completed due to security restrictions. Please contact your system administrator.
(Document type: product.template, Operation: read) None
Any idea what could be the problem ?