It will be great that either below is implemented to set Reminder Due Date based on Line Reminder Level:

Idea Option1) The reminder due date calculation uses the Line Reminder Level instead of Header Reminder Level. Idially it can be optional by specifing a parameter in a request page, such as "Use Header Level" in the request page of "Create Reminder".

Idea Option2) The Reminder Lines can be filtered by 'Customer Ledger Entry'.'Last Issued Reminder Level' when generating Reminder with "Create Reminder" job. Currently the filter can be selectable in the request page but does not really filter out the Reminder Line. If this filter gets available, the Header Reminder Level and Line Reminder Level can be same which can be a solution for due date calculation.

Thanks!