How To Fix WRF_APC329 - At least one calculated date is in the past

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 329

• Message text: At least one calculated date is in the past

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_APC329 - At least one calculated date is in the past ?

  Certainly! Here's a detailed explanation for the SAP error message WRF_APC329: At least one calculated date is in the past:
  
  Error Message
  WRF_APC329: At least one calculated date is in the past
  
  Cause
  This error occurs in SAP Advanced Planning and Optimization (APO), specifically in the context of Production Planning and Detailed Scheduling (PP/DS) or Demand Planning when the system calculates dates (such as planned order dates, production dates, or delivery dates) that fall before the current system date or the allowed planning horizon.
  Typical causes include:
  
  The planning run or heuristic generates dates that are earlier than the current date or the start of the planning horizon.
  Incorrect master data settings, such as lead times, production calendars, or product availability dates.
  The system's planning horizon or the planning book's time bucket settings are not aligned with the actual dates.
  Backdating of orders or incorrect date calculations due to custom enhancements or user exits.
  
  
  Solution
  
  
  Check Planning Horizon and Time Buckets:
  
  Verify that the planning horizon in the planning book or the planning run is set correctly.
  Ensure that the time buckets (daily, weekly, etc.) start from the current date or a valid future date.
  
  
  
  Review Master Data:
  
  Check product master data for valid availability dates.
  Verify lead times (procurement, production, transportation) to ensure they are realistic and do not cause backdating.
  Confirm that the production calendar and factory calendar are correctly maintained and do not cause date miscalculations.
  
  
  
  Adjust Planning Parameters:
  
  Modify the heuristic or planning run parameters to avoid generating dates in the past.
  If using custom logic or user exits, review the code to ensure date calculations are correct.
  
  
  
  Re-run Planning:
  
  After corrections, re-run the planning or heuristic to generate valid dates.
  
  
  
  Check System Date and Time Settings:
  
  Ensure the system date/time is correct and consistent across all relevant SAP systems.
  
  
  
  
  Related Information
  
  SAP Notes: Search for SAP Notes related to WRF_APC329 for any patches or known issues.
  Transaction Codes:
  
  /SAPAPO/SDP94 - Interactive Planning
  /SAPAPO/PPDS - PP/DS Planning
  
  
  Master Data Transactions:
  
  /SAPAPO/MAT1 - Product Master
  /SAPAPO/RES01 - Resource Master
  
  
  Planning Books and Data Views: Check settings in /SAPAPO/SDP94 or /SAPAPO/SDP91.
  Debugging: If custom enhancements are involved, debug the date calculation logic.
  
  
  If you provide more context (e.g., which module or transaction you encountered this error in), I can give more specific guidance.