How To Fix /SAPAPO/PALG020 - Sequence &1: First validity date &2 not before planning start date &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PALG -

• Message number: 020

• Message text: Sequence &1: First validity date &2 not before planning start date &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PALG020 - Sequence &1: First validity date &2 not before planning start date &3 ?

  The SAP error message /SAPAPO/PALG020 indicates that there is an issue with the validity dates of a sequence in the Advanced Planning and Optimization (APO) module. Specifically, the error states that the first validity date of a sequence is not before the planning start date. 
  Cause:
  This error typically occurs when:
  
  The sequence's first validity date is set to a date that is equal to or later than the planning start date.
  There may be a configuration or data entry error where the dates were not set correctly.
  The planning start date is incorrectly defined in the planning book or in the settings.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Validity Dates:
  
  Go to the sequence definition in the APO system.
  Verify the first validity date of the sequence and ensure it is set to a date that is earlier than the planning start date.
  
  
  
  Adjust the Planning Start Date:
  
  If the first validity date is correct and should remain as is, consider adjusting the planning start date to a date that is later than the first validity date.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the APO system to ensure that the planning start date is set correctly for the relevant planning book or planning area.
  
  
  
  Data Entry:
  
  If the dates were entered manually, double-check for any typographical errors or misconfigurations.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for any specific guidelines related to date settings in your version of SAP APO.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the sequence again to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/SEQ to access sequence definitions or /SAPAPO/DP for demand planning settings.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  User Roles: Ensure that you have the necessary permissions to make changes to sequences and planning settings in the APO module.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP APO for further assistance.