NetSuite custom record - read only access to all roles with few exceptions

Question

In a scenario where new record was created and attached to a new tab on the item record. I would like to give all roles ability to read data from it, but only few specific roles should be able to edit.

• Setting Access type to 'no permissions' would give all ability to change the content.
• Setting to 'permission list' would require adding a list of 100+ different roles, and continuous maintenance when new role is added

I tried setting it to no permissions, and then having workflow return error if wrong roles tries to edit it, but it doesn't work for inline editing.

The reason why every or at least vast majority of roles needs to be able to read this, is because we have a Client Script running for multiple transaction types (SO,PO, Opportunity etc). And said script will do its logic based on that custom record. Since Client Script are run based on the current user permission, it will throw an error if user has no specific access to that record.

I would appreciate any type of advice how to handle such scenario, either by permission configuration or running the search as different role in a Client Script.