The backorder credit date determines whether a released backorder is credit checked. When a sales order is entered, the backorder credit date is calculated from the Credit Check Backorder Days field in Customer Credit Rule Maintenance or Group Credit Rule Maintenance.
Example If today is 6/30/2020 and 7 is entered in the Credit Check Backorder Days field, then the backorder credit date is 7/7/2020. As backorders are released, the backorder credit date is updated. So, if a backorder is released on 7/8/2020, then the new backorder credit date is 7/15/2020.