How To Fix W4402 - &: & Forecast parameters with MRP area were deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 402

• Message text: &: & Forecast parameters with MRP area were deleted

Self-Explanatory Message

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• What is the cause and solution for SAP error message W4402 - &: & Forecast parameters with MRP area were deleted ?

  SAP Error Message:
  
  W4402: "& Forecast parameters with MRP area were deleted"
  
  Cause:
  This warning message occurs when forecast parameters that are assigned to a specific MRP area have been deleted. In SAP, forecast parameters define how the system calculates forecasts for materials, and these parameters can be maintained at the plant level or at the MRP area level (subdivision of a plant for planning purposes).
  If forecast parameters for an MRP area are deleted (either intentionally or accidentally), but the system or planning run still references these parameters, SAP issues this warning to indicate that the forecast parameters for that MRP area no longer exist.
  
  Explanation:
  
  Forecast parameters are maintained in transaction MP30 (Maintain Forecast Parameters).
  When forecast parameters are deleted for an MRP area, any dependent planning or forecasting processes that expect these parameters will trigger this warning.
  This message is informational/warning (W message), not an error (E message), so it does not stop processing but indicates a potential issue in forecast setup.
  
  
  Solution:
  
  
  Check Forecast Parameters:
  
  Go to transaction MP30.
  Verify if forecast parameters exist for the MRP area in question.
  If they were deleted unintentionally, recreate the forecast parameters for the MRP area.
  
  
  
  Adjust Planning Settings:
  
  If the MRP area no longer requires forecast parameters, adjust the planning settings or master data to remove references to the deleted forecast parameters.
  This might involve updating material master data or MRP area assignments.
  
  
  
  Review MRP Area Assignments:
  
  Ensure that the MRP area is correctly assigned and that forecast parameters are maintained accordingly.
  If the MRP area is obsolete, consider removing or archiving it.
  
  
  
  Run Forecast/Planning Again:
  
  After correcting the forecast parameters, rerun the forecast or MRP run to confirm the warning no longer appears.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MP30 – Maintain Forecast Parameters
  MD01/MD02/MD03 – MRP runs where forecast parameters are used
  MM02 – Change Material Master (to check MRP area assignments)
  
  
  
  Tables:
  
  T460A – Forecast parameters
  T460B – Forecast parameters per MRP area
  
  
  
  Notes and Documentation:
  
  SAP Help on Forecasting and MRP Area-specific planning
  SAP OSS Notes related to forecast parameter maintenance and MRP area planning
  
  
  
  
  Summary:
  The warning W4402 indicates that forecast parameters for a specific MRP area have been deleted but are still referenced in planning. To resolve, verify and maintain forecast parameters for the MRP area in transaction MP30 or adjust planning settings to remove references to the deleted parameters. This ensures consistent and error-free forecasting and planning runs.