How To Fix /SAPAPO/SEQ142 - Invalid planning horizon, as horizon end lies before horizon start

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SEQ -

• Message number: 142

• Message text: Invalid planning horizon, as horizon end lies before horizon start

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SEQ142 - Invalid planning horizon, as horizon end lies before horizon start ?

  The SAP error message /SAPAPO/SEQ142 Invalid planning horizon, as horizon end lies before horizon start typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the defined planning horizon in a planning book or a planning scenario. This error indicates that the end date of the planning horizon is set before the start date, which is logically incorrect.
  Cause:
  
  Incorrect Configuration: The planning horizon dates may have been incorrectly configured in the planning book or in the settings of the planning area.
  Data Entry Error: There may have been a manual error when entering the start and end dates for the planning horizon.
  Master Data Issues: The master data related to the planning area or planning book may not be set up correctly, leading to inconsistencies in the planning horizon.
  Time Period Settings: The time periods defined in the planning book may not align correctly, causing the end date to be earlier than the start date.
  
  Solution:
  
  
  Check Planning Horizon Settings:
  
  Go to the planning book or planning area settings in SAP APO.
  Verify the start and end dates of the planning horizon. Ensure that the end date is after the start date.
  
  
  
  Adjust Time Periods:
  
  Review the time periods defined in the planning book. Make sure that they are set up correctly and that there are no overlaps or misconfigurations.
  
  
  
  Review Master Data:
  
  Check the master data related to the planning area. Ensure that all relevant data is correctly maintained and that there are no inconsistencies.
  
  
  
  Reconfigure Planning Book:
  
  If necessary, reconfigure the planning book or planning area to correct any misconfigurations. This may involve deleting and recreating the planning book or adjusting the settings.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on configuring planning horizons and resolving related issues.
  
  
  
  Testing:
  
  After making changes, test the planning book to ensure that the error no longer occurs and that the planning horizon is functioning as expected.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/MC62 (for planning book configuration) or /SAPAPO/MC8A (for planning area configuration) to access and modify the relevant settings.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  User Forums: Consider visiting SAP community forums or user groups for additional insights and solutions shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the /SAPAPO/SEQ142 Invalid planning horizon error and ensure that your planning horizon is correctly configured.