Why can't I see some records or lists I know exist?

Is the record or list only visible to a specific user or user group?
Some records (accounts, mail, appointments, tasks, etc.) or lists can be marked as confidential and are then only visible to the respective user / group or delegate.

Contact the owner of the record or list.

Are you authorised to read these records or lists?
Not every user has the right to create, read or edit all data.

Ask your system administrator to authorise you to read the records or lists.

Has the record or list been assigned to the company?
Some record types (accounts, items, etc.) can be assigned to one or more companies if you have the Multi-Companies module. This means that not all companies can access all records or lists because they belong to the individual companies.

Contact the owner of the record or list.