At times some incorrect documents might have been entered in the systems. If you have entered an incorrect document, you can reverse it. Note that R/3 can reverse a document only if the following conditions are met: - Contains no cleared items - Contains only vendor, customer, or G/L line items - Was posted within the FI system - Contains only valid values, such as business areas, cost centers, and tax codes Ordinarily, you post a reversing document in the same period you posted the original document. The period of the original document must be open to post a reversing document. If the period is not open, you can overwrite the posting date field with a date in an open period, such as the current period. Reversal can be done individually - FB08 or Mass F.80. If the document to be reveresed contain cleared items, then cleared item must be reset before the reversal of document.
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