How To Fix /SAPAPO/PPM_MAINTAIN851 - Plan number &1 already exists - choose a different one

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PPM_MAINTAIN -

• Message number: 851

• Message text: Plan number &1 already exists - choose a different one

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 /SAPAPO/PPM_MAINTAIN851 - Plan number &1 already exists - choose a different one ?

  The SAP error message /SAPAPO/PPM_MAINTAIN851 indicates that you are trying to create a planning number (or plan number) in the SAP Advanced Planning and Optimization (APO) module that already exists in the system. This error typically occurs when you attempt to create a new plan or planning object with a number that is already in use.
  Cause:
  
  Duplicate Plan Number: The most common cause is that the plan number you are trying to use is already assigned to another planning object in the system.
  Incorrect Data Entry: There may have been a typographical error or misunderstanding regarding the plan number you intended to use.
  System Configuration: In some cases, the system may have been configured to restrict the use of certain plan numbers.
  
  Solution:
  
  Choose a Different Plan Number: The simplest solution is to select a different plan number that is not already in use. You can check the existing plan numbers in the system to ensure that the new one you choose is unique.
  Check Existing Plans: Use transaction codes like /SAPAPO/PPM or relevant reports to view existing plans and their numbers. This will help you identify which plan numbers are currently in use.
  Delete or Modify Existing Plan: If the existing plan is no longer needed, you may consider deleting it or modifying it to free up the plan number. However, be cautious with this approach, as it may affect other processes or data.
  Consult Documentation: Review the SAP documentation or help files related to planning numbers in APO for any specific guidelines or restrictions that may apply.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO, such as /SAPAPO/PPM for planning and /SAPAPO/MC90 for monitoring.
  SAP Notes: Check SAP Notes for any updates or patches that may address this issue.
  User Authorization: Ensure that you have the necessary authorizations to create or modify planning numbers in the system.
  System Configuration: Review the configuration settings in the APO module to understand any restrictions on plan number assignments.
  
  By following these steps, you should be able to resolve the error and successfully create or manage your planning numbers in SAP APO.