How To Fix /SAPAPO/OM_ERROR2143 - Date lies before first date

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR2 -

• Message number: 143

• Message text: Date lies before first date

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR2143 - Date lies before first date ?

  The SAP error message /SAPAPO/OM_ERROR2143 indicates that a date being processed in the system is earlier than the first date defined in the planning book or the relevant data structure. This typically occurs in the context of Advanced Planning and Optimization (APO) when trying to access or manipulate data that is outside the defined time horizon.
  Cause:
  
  Date Configuration: The date you are trying to use (e.g., for a planning run, forecast, or order) is set before the start date defined in the planning book or the data model.
  Data Entry Error: A user may have inadvertently entered a date that is not valid according to the planning parameters.
  Master Data Issues: The master data (like product, location, etc.) may not be set up correctly, leading to incorrect date ranges.
  Time Period Settings: The time period settings in the planning book or the data view may not be aligned with the data being processed.
  
  Solution:
  
  Check Planning Book Settings: Review the planning book settings to ensure that the start date is correctly defined. You can do this by navigating to the planning book in the SAP APO system and checking the date settings.
  Adjust Date Input: If you are manually entering dates, ensure that the date you are using is within the valid range defined in the planning book.
  Review Master Data: Ensure that the master data for the relevant product or location is correctly set up and that the time periods are valid.
  Consult Documentation: Refer to the SAP documentation or help files for guidance on the specific planning book or data structure you are working with.
  System Configuration: If you have access, check the configuration settings in the SAP APO system to ensure that the time periods are set correctly for the planning process you are executing.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/MC62 (for planning book maintenance) or /SAPAPO/OM17 (for checking the master data) to investigate further.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  User Forums: Consider looking at SAP community forums or user groups for similar issues and solutions shared by other users.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP APO for further assistance.