Hi
Please find below details of the Date column
DocDate : Document Date. Defaults to today's date. For 'RC' type documents, this is used as the Next Generation Date. Used as Transaction date for cash management for checks
DueDate: Due Date, as calculated from APDoc.Terms.
InvcDate: Vendor Invoice Date
PayDate : Pay date of document. Defaults as calculated from APDoc.Terms. Used for the selection of vouchers to pay. Defaults to the discount date if Vendor.PayDateDflt = 'D' or the due date if Vendor.PayDateDflt = 'U'
You can execute the below query to get the above information
Query to View all Records
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Select RefNbr, ApDoc.VendID,Vendor.Name as 'Vendor Name',Vendor.ClassID,DocType,DocDate,InvcDate,DueDate,PayDate,PerPost,PerClosed,OpenDoc,ApDoc.Crtd_User from
ApDoc Join Vendor On ApDoc.VendId=Vendor.VendId
Query to View the records for particular period
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Select RefNbr, ApDoc.VendID,Vendor.Name as 'Vendor Name',Vendor.ClassID,DocType,DocDate,InvcDate,DueDate,PayDate,PerPost,PerClosed,OpenDoc,ApDoc.Crtd_User from
ApDoc Join Vendor On ApDoc.VendId=Vendor.VendId
Where PerPost='201401' --Jan 2014
Hope this Helps
Thanks