Document date:The document date is the date on which the original document was issued.
Posting Date: Date which is used when entering the document in Financial Accounting or Controlling. The posting date can differ from both the entry date and the doc date.
There is goods receipt happening on 9th sep, 2008 along with it the invoice also comes dated 8th sep, 2008.
Suppose u post the entry on the same date in ur SAP system the day u recvd the goods, i.e. u credit the vendor on good receipt date, then the document date in this case will be 8th sep, 2008. the posting date will be 9th Sep, 2008.
The entry date is the actual date on which u make entry in SAP the system date. So entry date can be diffrent from posting date in this case
Edited by: Kishore Kumar Galla on Mar 27, 2010 4:32 PM
AS per the Posting period, only two posting period is open at one time.
Now Suppose u have a back date challan for material receipt now you can make the document date as back date in which challan is dated and posting date should be the two open period.
Suppose in month of December u get challan of october or september, so document date can be september or october but as per sap STD , posting can be possible in november and december. so u can post in this period.
Hope Help U !