I use odoo v12 Enterprise and installed multi-company and created points of sale in the second company. After configuring the points of sale, logging in, selling, I cannot post accounting entries or access the POS configuration, despite having all the administrator permissions. The error is the following extracted from the log file:

odoo.models: The requested operation cannot be completed due to the registration rules: Document type: res.users; Operation: read; Records: 1; User: 2

I checked the access permissions that have to do with res.user and they are the following:

I tried adding some groups, but it doesn't work either. Finally I reviewed the registration rules that have to do with res.users, which are the following:

I also tried adding some groups, but without results.