How To Fix SALV_X_API138 - Illegal node specified: Node is initial

SALV_X_API138 - Overview

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 138

• Message text: Illegal node specified: Node is initial

Self-Explanatory Message

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SALV_X_API138 - Details

• The SAP error message SALV_X_API138: Illegal node specified: Node is initial typically occurs when working with the SAP ALV (ABAP List Viewer) framework, particularly when trying to manipulate or access nodes in an ALV hierarchy that have not been properly initialized or populated.
  
  Cause:
  
  Uninitialized Node: The error indicates that the node you are trying to access or manipulate is not initialized. This can happen if you attempt to reference a node that has not been created or populated with data.
  Incorrect Node Reference: You may be trying to access a node that does not exist in the context of the ALV hierarchy.
  Data Retrieval Issues: If the data retrieval process fails or returns no data, the nodes may not be created, leading to this error when you try to access them.
  
  
  Solution:
  
  Check Node Initialization: Ensure that the node you are trying to access is properly initialized. You can do this by checking the code