When attempting to create an invoice from a sales order in a multi-company environment, the following error occurs:

Due to security restrictions, you are not allowed to access 'Product Variant' (product.product) records.
Records: Down payment (id=4717, company=)
User:  Praful Gautam (id=73)
This restriction is due to the following rules:

Contact your administrator to request access if necessary.
Implicitly accessed through 'Product Variant' (product.product).