How To Fix 37804 - Step loop contains an invalid element for table control (not converted)

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 804

• Message text: Step loop contains an invalid element for table control (not converted)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 37804 - Step loop contains an invalid element for table control (not converted) ?

  The SAP error message 37804, which states "Step loop contains an invalid element for table control (not converted)," typically occurs in the context of screen programming in SAP, particularly when dealing with table controls in dialog programming (Dynpro).
  Cause:
  This error usually arises due to one of the following reasons:
  
  
  Invalid Field Definition: The field definitions in the screen (or the associated data dictionary objects) may not match the expected structure for the table control. This can happen if a field is not properly defined or if it is not compatible with the table control.
  
  
  Missing Conversion: The error indicates that there is an element in the step loop that has not been converted properly. This can occur if the field is not defined in the data dictionary or if it is not included in the table control's structure.
  
  
  Incorrect Screen Layout: If the screen layout has been modified (e.g., fields added or removed) without updating the associated logic in the program, it can lead to inconsistencies.
  
  
  Data Element Issues: If the data elements used in the table control are not compatible with the expected data types or lengths, this can also trigger the error.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Field Definitions: Verify that all fields used in the table control are correctly defined in the data dictionary (SE11). Ensure that the data types and lengths are appropriate.
  
  
  Review Screen Layout: Open the screen in the Screen Painter (SE80 or SE41) and check the layout of the table control. Ensure that all fields are correctly mapped and that there are no missing or extra fields.
  
  
  Update Program Logic: If you have made changes to the screen layout, ensure that the associated ABAP code (in the PBO/PAI modules) is updated accordingly. This includes checking the logic that populates the table control and handles user input.
  
  
  Check for Conversion Routines: If you are using any conversion routines, ensure that they are correctly defined and applied to the fields in the table control.
  
  
  Recreate the Table Control: If the issue persists, consider recreating the table control from scratch. This can help eliminate any hidden inconsistencies.
  
  
  Debugging: Use the debugger to step through the code and identify where the error occurs. This can provide insights into which specific field or element is causing the issue.
  
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE11 (Data Dictionary), SE41 (Menu Painter), SE38 (ABAP Editor).
  Documentation: Refer to SAP Help documentation for detailed information on screen programming and table controls.
  SAP Notes: Check for any relevant SAP Notes that may address known issues related to this error message.
  
  By following these steps, you should be able to identify and resolve the cause of the SAP error message 37804.