How To Fix SALV_X_API170 - The table row type is deep, i.e. contains at least one nested table

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 170

• Message text: The table row type is deep, i.e. contains at least one nested table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_X_API170 - The table row type is deep, i.e. contains at least one nested table ?

  The SAP error message SALV_X_API170 indicates that you are trying to use the SAP ALV (ABAP List Viewer) functionality with a data structure that contains a nested table. The ALV Grid and other ALV display methods do not support deep structures (i.e., structures that contain nested tables or internal tables).
  Cause:
  The error occurs because the ALV framework expects a flat structure or a simple internal table for displaying data. When you attempt to pass a deep structure (which includes nested tables), the ALV cannot process it, leading to this error.
  Solution:
  To resolve this issue, you need to flatten the data structure before passing it to the ALV. Here are some approaches you can take:
  
  
  Flatten the Structure: Create a new flat structure that contains all the necessary fields from the deep structure, excluding the nested tables. You can then populate this flat structure with data from the original deep structure.
  
  
  Use a Different Display Method: If you need to display nested data, consider using a different method that can handle hierarchical data, such as a tree structure or a custom report that can manage nested tables.
  
  
  Separate ALV Displays: If the nested table contains related data that you want to display, consider creating a separate ALV report for the nested data and linking it to the main report through a common key.
  
  
  Use a Custom Class: If you have complex requirements, you might consider creating a custom class that can handle the display of deep structures, although this would require more development effort.
  
  
  Related Information:
  
  ALV Documentation: Review the SAP documentation on ALV to understand the limitations and capabilities of the ALV framework.
  ABAP Development: Familiarize yourself with ABAP programming techniques for handling data structures, especially when dealing with nested tables and structures.
  SAP Community: Check the SAP Community forums for discussions and solutions related to similar issues, as other developers may have encountered and resolved the same problem.
  
  By following these steps, you should be able to resolve the SALV_X_API170 error and successfully display your data using ALV.