How To Fix WVLB156 - Supplier service level for plant &1, date &2: &3 (reason: missing forect)

SAP Error Message - Details

• Message type: E = Error

• Message class: WVLB - Messages for Load Building

• Message number: 156

• Message text: Supplier service level for plant &1, date &2: &3 (reason: missing forect)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WVLB156 - Supplier service level for plant &1, date &2: &3 (reason: missing forect) ?

  The SAP error message WVLB156 indicates an issue related to the supplier service level for a specific plant and date, with the reason being "missing forecast." This error typically arises in the context of supply chain management, particularly when dealing with vendor-managed inventory (VMI) or similar processes where forecasts are essential for planning and procurement.
  Cause:
  The error message WVLB156 is triggered when the system expects a forecast for a particular supplier and plant combination on a specific date, but it cannot find the required forecast data. This can happen due to several reasons:
  
  Missing Forecast Data: The forecast for the specified plant and date has not been created or is not available in the system.
  Incorrect Configuration: The configuration settings for the supplier or the planning parameters may not be set up correctly.
  Data Synchronization Issues: There may be issues with data synchronization between different modules or systems, leading to missing forecast information.
  Time Period Issues: The forecast might be outside the valid time period defined in the system.
  
  Solution:
  To resolve the WVLB156 error, you can take the following steps:
  
  
  Check Forecast Data:
  
  Navigate to the relevant forecast data for the supplier and plant in question.
  Ensure that a forecast exists for the specified date. If it does not, create or update the forecast as necessary.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the supplier and the planning parameters in the system.
  Ensure that the supplier is correctly set up for the relevant plant and that all necessary data is maintained.
  
  
  
  Data Synchronization:
  
  If you are using multiple systems or modules, ensure that data synchronization is functioning correctly.
  Check for any recent changes or updates that might have affected the availability of forecast data.
  
  
  
  Time Period Validation:
  
  Verify that the date for which the forecast is required falls within the valid planning horizon.
  Adjust the planning parameters if necessary to include the required date.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for additional insights on managing forecasts and resolving related errors.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MD61 (Create Forecast) or MD62 (Change Forecast) to manage forecast data.
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  Training and Documentation: Ensure that users involved in supply chain planning are adequately trained on how to manage forecasts and understand the implications of missing data.
  
  By following these steps, you should be able to identify the root cause of the WVLB156 error and implement the necessary solutions to resolve it.