How To Fix WE039 - The line on which the cursor is positioned is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: WE - Messages for EAN Customizing and for EAN management in MM_BD

• Message number: 039

• Message text: The line on which the cursor is positioned is not allowed

Self-Explanatory Message

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• What is the cause and solution for SAP error message WE039 - The line on which the cursor is positioned is not allowed ?

  Certainly! Here's a detailed explanation for the SAP error message WE039: "The line on which the cursor is positioned is not allowed":
  
  Error Message:
  WE039 - The line on which the cursor is positioned is not allowed
  
  Cause:
  This error typically occurs in the IDoc (Intermediate Document) processing environment, specifically when working with IDoc segments in transactions like WE02, WE05, WE19, or during IDoc editing or processing.
  
  The message indicates that the user or program is trying to perform an action (such as editing, adding, or deleting) on a line (segment) in the IDoc that is not allowed.
  This can happen because:
  
  The segment is not modifiable due to its status or because it is a system-controlled segment.
  The cursor is positioned on a control record line or a header segment that is protected.
  The segment is not part of the current processing context or is read-only.
  The user is trying to insert or delete a segment in a place where the IDoc structure does not allow it (e.g., violating the IDoc hierarchy or segment sequence).
  
  
  
  
  When does it occur?
  
  While editing an IDoc in transaction WE19 (Test tool for IDocs).
  When trying to add or delete segments in an IDoc.
  When trying to process or reprocess an IDoc with an invalid cursor position.
  During custom development or user-exits that manipulate IDoc segments.
  
  
  Solution:
  
  
  Check the cursor position:
  
  Make sure the cursor is positioned on a segment line that is allowed to be edited or processed.
  Avoid placing the cursor on control records or header lines.
  
  
  
  Use the correct transaction and mode:
  
  For editing IDocs, use WE19 and ensure you are in the correct mode (e.g., test or edit mode).
  Some segments are system-controlled and cannot be changed manually.
  
  
  
  Verify IDoc structure:
  
  Ensure that any addition or deletion of segments respects the IDoc segment hierarchy and sequence.
  Use the IDoc type definition (WE30) to understand allowed segments and their relationships.
  
  
  
  Check authorization:
  
  Ensure the user has the necessary authorizations to edit or process IDocs.
  
  
  
  If in custom code:
  
  Review the code to ensure it does not try to manipulate segments in an invalid way.
  Use standard function modules and APIs for IDoc processing.
  
  
  
  Reprocess or recreate the IDoc:
  
  If the IDoc is corrupted or incorrectly structured, consider recreating it or correcting the data before processing.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  WE02 / WE05 - Display IDocs
  WE19 - Test tool for IDocs (editing and testing)
  WE30 - IDoc type development (to check segment structure)
  WE31 - Segment editor
  
  
  
  SAP Notes and Documentation:
  
  Check SAP OSS Notes for any known issues related to WE039.
  Review SAP Help Portal documentation on IDoc processing and editing.
  
  
  
  IDoc Segment Hierarchy:
  
  IDocs have a strict hierarchical structure.
  Segments must be added or deleted according to the parent-child relationships defined in the IDoc type.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Attempt to edit or process an IDoc segment line that is not allowed (e.g., control record, header, or invalid segment).
  
  
  Solution
  Position cursor on valid segment lines, respect IDoc structure, use correct transactions, check authorizations, and avoid editing system-controlled segments.
  
  
  Related
  Transactions WE19, WE02, WE05, WE30; IDoc segment hierarchy; SAP Notes on IDoc processing.
  
  
  
  
  If you provide more context (e.g., transaction used, action performed), I can help with a more specific solution.