To implement security to resolve the invoice data issue, you need to perform three actions:

In Microsoft Power Platform admin center, navigate to the Security roles section. This is where you can manage the security roles for your environment and assign them to users or teams.

Select the Finance role, select Custom Entities and navigate to the table. This is where you can configure the access level for each entity in your environment based on your security role.

Clear the Create and Delete permissions. Set the Read permission and Write permission values to Business unit. This will restrict users with this role from creating or deleting records in this table, but allow them to read or write records within their business unit.