How To Fix WT005 - Forecast weighting could not be created

SAP Error Message - Details

• Message type: E = Error

• Message class: WT - Retail: Replenishment

• Message number: 005

• Message text: Forecast weighting could not be created

Self-Explanatory Message

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• What is the cause and solution for SAP error message WT005 - Forecast weighting could not be created ?

  The SAP error message WT005: Forecast weighting could not be created typically occurs in the context of forecasting and planning within SAP, especially when working with demand planning (DP) or forecast models in SAP APO (Advanced Planning and Optimization) or related modules.
  
  Cause of WT005
  The error "Forecast weighting could not be created" usually indicates that the system failed to generate or assign the forecast weighting factors during the forecast calculation process. This can happen due to several reasons:
  
  
  Missing or Incorrect Forecast Weighting Parameters:
  
  The forecast model requires weighting factors to be defined for historical data points.
  If these weighting factors are missing, incomplete, or incorrectly maintained, the system cannot create the forecast weighting.
  
  
  
  Incorrect or Incomplete Forecast Model Setup:
  
  The forecast model assigned to the product/location or planning object might not be properly configured.
  For example, the weighting method or parameters might be missing or invalid.
  
  
  
  Data Issues:
  
  Historical data might be missing or inconsistent.
  The time series data might not cover the required periods for weighting calculation.
  
  
  
  Authorization or System Issues:
  
  Sometimes, authorization problems or system inconsistencies can cause the failure.
  
  
  
  
  Solution / How to Resolve WT005
  
  
  Check Forecast Model Configuration:
  
  Go to the forecast model settings (transaction /SAPAPO/SDP94 or relevant transaction).
  Verify that the weighting method is correctly defined.
  Ensure that the weighting parameters (e.g., weights for historical periods) are maintained properly.
  
  
  
  Maintain Forecast Weighting Parameters:
  
  Use transaction /SAPAPO/SDP94 or the relevant planning book to check and maintain the forecast weighting.
  Ensure that the weighting factors for the historical periods are defined and valid.
  
  
  
  Verify Historical Data:
  
  Check if the historical data is available and consistent for the periods required by the forecast model.
  Use transaction /SAPAPO/SDP7 or relevant data views to inspect historical data.
  
  
  
  Re-run Forecast Calculation:
  
  After correcting the weighting parameters and ensuring data consistency, re-run the forecast calculation.
  Monitor the logs for any further errors.
  
  
  
  Check Authorizations:
  
  Ensure that the user running the forecast has the necessary authorizations to create or modify forecast weightings.
  
  
  
  SAP Notes and Support:
  
  Check SAP Notes for any known issues related to WT005.
  For example, SAP Note 1234567 (example) might provide patches or corrections.
  
  
  
  
  Related Information
  
  
  Forecast Weighting:
  
  Forecast weighting is used to assign different importance to historical data points when calculating the forecast. For example, more recent periods might be weighted higher than older periods.
  
  
  Forecast Models:
  
  Common forecast models include Moving Average, Exponential Smoothing, etc., which rely on weighting factors.
  
  
  Transactions:
  
  /SAPAPO/SDP94 – Forecast Model Maintenance
  /SAPAPO/SDP7 – Demand Planning Data View
  /SAPAPO/SDP91 – Forecast Calculation
  
  
  
  SAP Modules:
  
  APO Demand Planning (DP)
  SAP IBP (Integrated Business Planning) might have similar concepts but different error handling.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WT005: Forecast weighting could not be created
  
  
  Cause
  Missing/incorrect forecast weighting parameters, incomplete forecast model setup, missing historical data
  
  
  Solution
  Verify and maintain forecast weighting parameters, check forecast model setup, ensure historical data availability, re-run forecast calculation
  
  
  Related Transactions
  /SAPAPO/SDP94, /SAPAPO/SDP7, /SAPAPO/SDP91
  
  
  Additional Notes
  Check SAP Notes for patches or known issues
  
  
  
  
  If you provide more context (e.g., module, transaction, scenario), I can help with more specific steps.