In certain situations, the reversal of posting documents may be cancelled with an error. This may, for example, occur in the following situations:

• The specified posting date is in a posting period that is already closed.
• At the time of the reversal, the posting of the original document had not been completed.
• Account assignment objects (for example, cost centers) which were posted to in the original document are closed at the time of the reversal.
• Posting items that were created by the original document are already cleared at the time of the reversal (for example to customer and vendor accounts).

If the reversal is cancelled with an error, the relevant posting run gets the status Reversal documents incorrect. In this case, you must check the incorrect reversal documents and reverse the reversal that went wrong to be able to reverse the posting documents a second time.

If the reversal is cancelled not because of an error but for example, for technical reasons, the posting run in question can have one of the following statuses:

• Reversal document creation is running
• Reversal documents created
• Reversal is running

In this case, it is not necessary to perform the steps for checking the incorrect reversal documents specified below. Only perform the steps that are required to reverse the incorrect reversal.

The posting run was returned back to the same state as it had after the posting documents to be reversed were posted. It can be reversed again.