New Data Type Add a new SalesParameters method: static client server NumberSequenceReference numRefSalesIdBlanket() { return NumberSeqReference::findReference(typeId2ExtendedTypeId(typeid(SalesIdBlanket))); } Assign SalesId in the somewhere during the creation of the blanket order: salesTable.SalesId = NumberSeq::newGetNum(SalesParameters::numRefSalesIdBlanket()).num(); Add new reference to NumberSeqReference_SalesOrder class (used to add the new number sequence to the list in the CustParameters form) protected void loadModule() { NumberSequenceReference numRef; ; //blanket order number sequence numRef.DataTypeId = typeId2ExtendedTypeId(typeid(SalesIdBlanket)); numRef.ReferenceHelp = literalstr("@SYS53960"); numRef.ReferenceLabel = literalstr("@CUS525"); numRef.WizardManual = NoYes::No; numRef.WizardAllowChangeDown = NoYes::No; numRef.WizardAllowChangeUp = NoYes::No; numRef.SortFie...