The date in DELDATE comes from the LinkDeldate in SAR. If the LINKID in SAR is a COA, the DELDATE (LinkDelDate) in SBM is taken from the scheduled shipping date field on the order line – COAITEM. If the LINKID in SAR is a PWO, the DELDATE (LinkDelDate) in SBM the date from the Prodstart on PWO. In addition to this, one of the steps in the optimalization jobs will affect what is defined in the LinkDelDate.