How To Fix LK009 - Inconsistency of data in the individual IDOC segments

SAP Error Message - Details

• Message type: E = Error

• Message class: LK - WM -> SUB connection messages

• Message number: 009

• Message text: Inconsistency of data in the individual IDOC segments

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LK009 - Inconsistency of data in the individual IDOC segments ?

  The SAP error message LK009, which indicates "Inconsistency of data in the individual IDOC segments," typically arises during the processing of IDocs (Intermediate Documents) in SAP. This error suggests that there is a mismatch or inconsistency in the data contained within the segments of the IDoc, which can prevent successful processing.
  Causes of LK009 Error
  
  
  Data Mismatch: The data in the IDoc segments may not conform to the expected format or structure. This can happen if the data is incorrectly formatted or if required fields are missing.
  
  
  Segment Structure Changes: If there have been changes to the IDoc structure (e.g., adding or removing segments or fields) in the SAP system, and the IDoc being processed does not match the new structure, inconsistencies can occur.
  
  
  Incorrect Mapping: If the IDoc is being generated from an external system, incorrect mapping of fields can lead to inconsistencies.
  
  
  Data Type Issues: If the data types of the fields in the IDoc do not match the expected data types in the target system, this can lead to errors.
  
  
  Custom Enhancements: Custom enhancements or modifications to the IDoc processing logic can introduce inconsistencies if not properly managed.
  
  
  Solutions to LK009 Error
  
  
  Check IDoc Structure: Verify the structure of the IDoc against the expected structure in the SAP system. Ensure that all required segments and fields are present and correctly formatted.
  
  
  Validate Data: Review the data being sent in the IDoc for any inconsistencies, such as incorrect data types, missing mandatory fields, or invalid values.
  
  
  Review Mapping: If the IDoc is generated from an external system, check the mapping of fields to ensure that they align with the expected structure in SAP.
  
  
  Use Transaction WE02/WE05: Use transaction codes WE02 or WE05 to analyze the IDoc. These transactions allow you to view the details of the IDoc, including the segments and their statuses, which can help identify the source of the inconsistency.
  
  
  Check for Enhancements: If there are custom enhancements or modifications related to IDoc processing, review them to ensure they are not causing the inconsistency.
  
  
  Reprocess IDoc: After correcting any identified issues, you can reprocess the IDoc using transaction BD87 or similar.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to the LK009 error.
  
  
  Related Information
  
  IDoc Types: Familiarize yourself with the specific IDoc type being processed, as different IDoc types have different structures and requirements.
  Error Handling: Implement proper error handling and logging mechanisms to capture and address IDoc processing errors in a timely manner.
  Testing: Conduct thorough testing of IDoc generation and processing, especially after any changes to the system or IDoc structure.
  
  By following these steps, you should be able to identify and resolve the inconsistency causing the LK009 error in your SAP system.