How To Fix KH871 - One step backwards is not possible

KH871 - Overview

• Message type: E = Error

• Message class: KH - CO-PA Reporting

• Message number: 871

• Message text: One step backwards is not possible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KH871 - One step backwards is not possible ?

  The SAP error message KH871 ("One step backwards is not possible") typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with the process of posting or reversing cost allocations, such as in internal orders or cost centers.
  
  Cause:
  The error message KH871 usually indicates that you are trying to reverse a transaction or step that cannot be reversed because it is not the last step in a sequence of postings. This can happen in various scenarios, such as:
  
  Multiple Postings: If there have been multiple postings after the one you are trying to reverse, SAP will not allow you to go back to that step.
  Document Status: The document you are trying to reverse may have already been processed or closed, making it impossible to reverse it.
  Dependencies: There may be dependencies on other documents or transactions that prevent the reversal.
  
  
  Solution:
  To resolve the KH871 error, consider the following steps:
  
  
  Check Posting