today I want to share one nesessary step which is needed for graph in order to save graph which has more then one DAC ( data access class ).
In my case I have DAC PRPayRoll, which is joined with classes PRPayrollDetails, PRPaySlip, PRTran.
In that case it is needed to mention in graph declaration primary dac.
So instead of writing
public class PayRollManager : PXGraph<PayRollManager>
public class PayRollManager : PXGraph<PayRollManager, PRPayroll>
Where PRPayroll is primary DAC. Or if to quote Acumatica manual PRPayroll is primary DAC for business logic container