How To Fix /SAPAPO/INBND018 - Calculated start date of DRP planning horizon is larger than the end date

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/INBND -

• Message number: 018

• Message text: Calculated start date of DRP planning horizon is larger than the end date

Self-Explanatory Message

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• What is the cause and solution for SAP error message /SAPAPO/INBND018 - Calculated start date of DRP planning horizon is larger than the end date ?

  The SAP error message /SAPAPO/INBND018 indicates that the calculated start date of the Distribution Requirements Planning (DRP) planning horizon is larger than the end date. This typically occurs in the context of planning and scheduling within SAP Advanced Planning and Optimization (APO) when the configuration of the planning horizon is not set correctly.
  Cause:
  
  Incorrect Planning Horizon Configuration: The planning horizon may be set incorrectly in the system, leading to a situation where the start date is after the end date.
  Master Data Issues: There may be issues with the master data, such as incorrect lead times or planning parameters that affect the calculation of the planning horizon.
  Time Period Settings: The time periods defined for planning (like the start and end dates) may not align properly, causing the system to calculate an invalid range.
  Changes in Calendar Settings: If there have been recent changes to the calendar settings or holidays, it may affect the planning horizon.
  
  Solution:
  
  
  Check Planning Horizon Settings:
  
  Go to the configuration settings for the DRP planning horizon in SAP APO.
  Ensure that the start date is set correctly and is earlier than the end date.
  
  
  
  Review Master Data:
  
  Check the master data for the relevant products and locations to ensure that lead times and other parameters are set correctly.
  Make sure that the planning data is consistent and does not have any discrepancies.
  
  
  
  Adjust Time Periods:
  
  Review the time periods defined for planning and ensure they are correctly aligned.
  If necessary, adjust the planning periods to ensure that the start date is before the end date.
  
  
  
  Check Calendar Settings:
  
  Review any recent changes made to the calendar settings or holiday definitions that might affect the planning horizon.
  Ensure that the calendar used for planning is correctly defined and does not have any conflicts.
  
  
  
  Run Planning Again:
  
  After making the necessary adjustments, re-run the planning process to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/SDP94 (for planning book) or /SAPAPO/DRP1 (for DRP planning) to check and adjust settings.
  Documentation: Refer to SAP Help documentation for detailed guidance on configuring DRP and understanding planning horizons.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or APO functional team for further investigation.