Duplication of Purchase Order while creating sales orders for a customer

Question

when we try to create sales order for one customer it have to create by picking up the purchase order from the table linearly.
But the problem is that here when we are trying to create multiple sales orders the same purchase order is being picked.
for example..when we create sales order 1 the purchase order picked is PO1 and
for creation of sales order 2 the same purchase order PO1 is being picked up instead of PO2.
No idocs are being generated in this, even to check them..
How shall i resolve this...? Please help me out ASAP

Answer 1

Hi Kumar,
Thanks for the reply. But actually the problem is that this is related to some customized table in the project. When a EDI Batch job runs in the background then automatically the SO is created and the PO is being picked from the table(custom table) and then posted against the respective SO. we are not aware of that job which is triggering this to debug. Once if we can know that particular batch job or pgm or edi or idoc what ever it is then we can debug.
Do you have any idea how can we find that particular pgm/edi/idoc/job name which triggers this creation of SO?