BT-137: Purpose Lot Identifier Type IDENTIFIER Fields BT-137-Lot Purpose Lot Identifier BT-137-Lot-Scheme Purpose Lot Identifier Schemename BT-137-LotsGroup Purpose Lot Identifier BT-137-LotsGroup-Scheme Purpose Lot Identifier Schemename BT-137-Part Purpose Lot Identifier BT-137-Part-Scheme Purpose Lot Identifier Schemename