How To Fix SALV_X_API137 - Illegal node type specified: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 137

• Message text: Illegal node type specified: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_X_API137 - Illegal node type specified: &1 ?

  The SAP error message SALV_X_API137 with the description "Illegal node type specified: &1" typically occurs when working with the SAP ALV (ABAP List Viewer) framework, particularly when using the SALV (Simple ALV) classes. This error indicates that an invalid or unsupported node type has been specified in the context of the ALV operations.
  Cause:
  The error can be caused by several factors, including:
  
  Incorrect Node Type: The node type specified in the ALV method is not recognized or is not valid for the operation being performed.
  Improper Configuration: The ALV configuration might be set up incorrectly, leading to the use of an unsupported node type.
  Code Issues: There may be issues in the ABAP code where the ALV is being instantiated or manipulated, such as passing incorrect parameters or using the wrong methods.
  
  Solution:
  To resolve the error, consider the following steps:
  
  
  Check Node Type: Review the code where the ALV is being set up. Ensure that the node type being specified is valid and supported by the ALV framework. Common node types include CL_SALV_TABLE, CL_SALV_HIERSEQ_TABLE, etc.
  
  
  Review ALV Configuration: Ensure that the ALV configuration is correct. If you are using a hierarchical ALV, make sure that the data structure you are passing matches the expected format.
  
  
  Debugging: Use the ABAP debugger to trace the execution of the code leading up to the error. Check the values being passed to the ALV methods and ensure they are as expected.
  
  
  Consult Documentation: Refer to the SAP documentation for the SALV classes to understand the expected parameters and node types. This can help clarify what is valid in your context.
  
  
  Example Code: If possible, compare your implementation with working examples or standard SAP examples to identify discrepancies.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional context.
  
  
  Related Information:
  
  
  SALV Classes: Familiarize yourself with the various SALV classes and their intended use cases. The most commonly used classes include:
  
  CL_SALV_TABLE: For displaying simple ALV tables.
  CL_SALV_HIERSEQ_TABLE: For displaying hierarchical sequential ALV tables.
  
  
  
  ALV Documentation: SAP provides extensive documentation on ALV and SALV, which can be helpful in understanding the framework and its capabilities.
  
  
  Community Forums: Consider checking SAP Community forums or other ABAP developer communities for similar issues and solutions shared by other developers.
  
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.