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