How To Fix WSUBST012 - Maintain one type of enhancement logic for the delivery generation

SAP Error Message - Details

• Message type: E = Error

• Message class: WSUBST - Substitution Article Handling

• Message number: 012

• Message text: Maintain one type of enhancement logic for the delivery generation

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• What is the cause and solution for SAP error message WSUBST012 - Maintain one type of enhancement logic for the delivery generation ?

  Certainly! Here's a detailed explanation regarding the SAP error message WSUBST012: "Maintain one type of enhancement logic for the delivery generation":
  
  Error Message:
  WSUBST012 – Maintain one type of enhancement logic for the delivery generation
  
  Cause:
  This error occurs during the delivery creation process in SAP (typically in SD module) when there is more than one type of enhancement logic maintained or assigned for the delivery generation for a particular combination of sales document type and item category.
  In SAP, the delivery generation process can be enhanced or customized using user exits, BADIs, or enhancement spots. However, the system expects only one type of enhancement logic to be active or maintained for a given scenario. If multiple enhancement logics are maintained or conflicting entries exist, the system throws this error to avoid ambiguity in processing.
  
  Where does this happen?
  
  During delivery creation (transaction VL01N or VL10x)
  When the system tries to determine the enhancement logic for delivery generation based on sales document type and item category.
  The configuration or custom code setup for delivery enhancement logic is inconsistent or duplicated.
  
  
  Typical Scenarios Leading to WSUBST012:
  
  Multiple entries in the customizing table for delivery enhancement logic (e.g., in V_TVLP or related tables).
  Conflicting or overlapping user exits or BADIs implemented for delivery creation.
  Custom developments or enhancements that are not properly segregated or maintained.
  Incorrect or duplicate assignment of enhancement logic in IMG customizing.
  
  
  Solution:
  
  
  Check Customizing for Delivery Enhancement Logic:
  
  Go to transaction SPRO ? Logistics Execution ? Shipping ? Deliveries ? Define Delivery Types.
  Check the assignment of enhancement logic for delivery generation.
  Ensure that for each sales document type and item category combination, only one enhancement logic is maintained.
  
  
  
  Review Enhancement Implementations:
  
  Check for user exits or BADIs related to delivery creation, such as:
  
  User exit: EXIT_SAPLV50E_001 (Delivery creation)
  BADI: LE_SHP_DELIVERY_PROC or LE_SHP_DELIVERY_UPDATE
  
  
  Make sure only one enhancement implementation is active for the relevant scenario.
  
  
  
  Check Table Entries:
  
  Use SE16/SE16N to check tables like TVLP or any custom tables used for enhancement logic assignment.
  Remove or correct duplicate or conflicting entries.
  
  
  
  Debugging:
  
  If the cause is not obvious, debug the delivery creation program (e.g., SAPLV50E) to see where the system checks for enhancement logic.
  Identify which entries or logic cause the conflict.
  
  
  
  Clean Up Custom Code:
  
  If custom code is involved, ensure that the logic to determine enhancement is consistent and does not allow multiple enhancement types for the same delivery generation scenario.
  
  
  
  
  Additional Information:
  
  This error is a safeguard to prevent inconsistent or ambiguous processing during delivery creation.
  Proper maintenance of customizing and enhancement logic is crucial for smooth delivery processing.
  If you recently transported customizing or enhancements, verify that no duplicates or conflicts were introduced.
  Consult SAP Notes or OSS messages if the problem persists after checking customizing and enhancements.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WSUBST012: Maintain one type of enhancement logic for the delivery generation
  
  
  Cause
  Multiple enhancement logics maintained for delivery generation for the same scenario
  
  
  Solution
  Ensure only one enhancement logic is maintained per sales doc type and item category
  
  
  Checkpoints
  Customizing (SPRO), user exits, BADIs, customizing tables (TVLP), custom code
  
  
  Tools
  SPRO, SE16N, Debugger, Enhancement Implementation Monitor (SE18/SE19)
  
  
  
  
  If you need help with specific transactions or tables related to your system version, please provide more details about your SAP environment.