How To Fix WRF_AT_GENERATE009 - Allocation strategy &1 does not have a valid screen in Customizing

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_AT_GENERATE - Messages: Allocation Table Generation RTFASH/Ordering

• Message number: 009

• Message text: Allocation strategy &1 does not have a valid screen in Customizing

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_AT_GENERATE009 - Allocation strategy &1 does not have a valid screen in Customizing ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WRF_AT_GENERATE009 Allocation strategy &1 does not have a valid screen in Customizing
  
  Cause:
  This error occurs when the system tries to generate or process a work breakdown structure (WBS) or a related allocation strategy, but the allocation strategy specified (represented by &1, which is a placeholder for the actual strategy ID) does not have a valid or assigned screen configuration in the SAP Customizing settings.
  In other words, the allocation strategy you are trying to use is either incomplete or incorrectly configured in the IMG (Implementation Guide). The system expects a screen layout or configuration for this allocation strategy to guide the user input or processing, but it cannot find one.
  
  Where it typically occurs:
  
  During the generation of WBS elements or cost allocation processes.
  When using certain allocation strategies in Controlling (CO) or Project System (PS) modules.
  In custom developments or enhancements where allocation strategies are referenced.
  
  
  Solution:
  
  
  Check Allocation Strategy Configuration:
  
  Go to SAP Customizing Implementation Guide (IMG):
  
  Path: Controlling -> Cost Center Accounting -> Planning -> Allocation -> Define Allocation Strategies
  
  
  Verify that the allocation strategy &1 exists and is properly maintained.
  Ensure that the allocation strategy has a valid screen assigned or configured.
  
  
  
  Maintain Screen Layout for Allocation Strategy:
  
  Some allocation strategies require a screen layout or parameter screen to be defined.
  Check if the screen layout is missing or incorrectly assigned.
  Assign or correct the screen layout for the allocation strategy.
  
  
  
  Transport and System Consistency:
  
  If this error appears after a transport or system copy, verify that all customizing related to allocation strategies and screen layouts have been transported correctly.
  Sometimes, missing customizing in the target system causes this error.
  
  
  
  Check for OSS Notes:
  
  Search SAP OSS Notes for any known issues related to this error message and your SAP version.
  Apply relevant notes if available.
  
  
  
  Consult with Functional Consultant:
  
  If you are not sure about the allocation strategy configuration, consult with a Controlling or Project System functional consultant.
  They can verify the business requirements and ensure the allocation strategy is correctly set up.
  
  
  
  
  Additional Information:
  
  Transaction Codes to Check:
  
  OKKN - Define Allocation Strategies
  SPRO - Access to IMG for configuration
  
  
  Modules Involved:
  
  Controlling (CO)
  Project System (PS)
  
  
  Related Concepts:
  
  Allocation strategies define how costs or quantities are allocated from one cost object to another.
  Proper screen configuration ensures that users can input necessary parameters during allocation.
  
  
  
  
  Summary:
  The error WRF_AT_GENERATE009 indicates a missing or invalid screen configuration for the specified allocation strategy in SAP Customizing. To resolve it, verify and maintain the allocation strategy and its screen layout in the IMG, ensure all customizing is transported correctly, and consult SAP notes or functional experts if needed.
  
  If you provide the exact allocation strategy code (&1), I can help you with more specific guidance.