We have a custom list which contain 4 levels of approvals as follow:-
and the item will have unique permission on each stage. for example when it is Assigned to the Area Manager >> only the related area manager can edit while others can read-only. and once the senior manager approve the item >> its status will be closed and will have read-only to all users.
now our list sooner or later will reach the 5,000 unique items limit mentioned on this link https://docs.microsoft.com/en-us/office365/servicedescriptions/sharepoint-online-service-description/sharepoint-online-limits#unique-security-scopes-per-list-or-library .. Can anyone advice how we can handle this?