The Smart Materials Site module stores reserved and issued quantities against the BOM positions table. This makes it necessary to handle the business case of a BOM modification through OMI when material from this BOM is either already reserved or even already issued on site, for example, because of design changes.
To control how such modifications should be processed, the Transfer Site Qty check box on B.40.01 and the ZI_OMI_DCC and ZI_OMI_DCA project defaults are available. If configured for automatic Design Change Control, OMI logs design changes, performs automatic cancellation of over-reserved quantities, reissues design change quantities to appropriate design change warehouses, and logs reservation shortages. User acknowledgments of such events are tracked by a system-generated Material and Design Maintenance number.
Detailed processing rules for the "Transfer Site Qty" option and the "Design Change Control" option are documented in Processing Logic.