Hi Navitha,
I have moved your post to our General Q & A forum since I don't think your question is specific to the Method Professional Services App.
If you edit the PurchaseOrder table from Customize>>>Tables / Fields you can dig in and explore the exisiting fields. Here you will see a field called 'IsFullyReceived' which should help you. This indicates if the PO as a whole has been fully received or not. Tip, I would make sure that QB is open and the sync engine is connected.
Now, its also important to know that there is more than one table involved here. PurchaseOrder will contain the fields for the PO (header) and PurchaseOrderLine is the table that stores the line items.
Cheers,
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