To get new Sales order number,Project proposal id and Transfer order number in Ax 2012 You can get hints from below code.     //Get new sales Id     salesTable.SalesId = NumberSeq::newGetNum(SalesParameters::numRefSalesId()).num();    //Get new project proposal id    NumSeq = NumberSeq::newGetNum(NumberSeqReference::findReference(extendedTypeNum(ProjProposalId)));    //Get new Transfer order number    inventTransferTable.TransferId = InventTransferTable::numberSeq().num();     Where parameter table is used and extended data type passed in method.  
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