How To Fix BRAINOLAPAPI150 - The type of the child node for &1 is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAINOLAPAPI - Message class for OLAP API

• Message number: 150

• Message text: The type of the child node for &1 is invalid

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRAINOLAPAPI150 - The type of the child node for &1 is invalid ?

  The SAP error message BRAINOLAPAPI150 indicates that there is an issue with the type of a child node in a hierarchy or structure within the SAP BW (Business Warehouse) environment, particularly when dealing with OLAP (Online Analytical Processing) queries or data models.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Hierarchy Structure Issues: The child node being referenced does not match the expected type defined in the hierarchy. For example, if a node is expected to be a characteristic and it is defined as a key figure, this mismatch can trigger the error.
  Data Model Configuration: There may be inconsistencies in the data model configuration, such as incorrect settings in the InfoObject or the hierarchy definition.
  Transport Issues: If the hierarchy or InfoObject was transported from one system to another, there may be discrepancies in the definitions or settings that lead to this error.
  
  Solution:
  To resolve the BRAINOLAPAPI150 error, you can take the following steps:
  
  
  Check Hierarchy Definition:
  
  Go to the transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the InfoObject and check the hierarchy definition. Ensure that the child nodes are correctly defined and match the expected types.
  
  
  
  Validate InfoObject Settings:
  
  Ensure that the InfoObject settings are correct. Check the properties of the InfoObject to confirm that the data types and characteristics are properly defined.
  
  
  
  Rebuild Hierarchy:
  
  If the hierarchy is corrupted, consider rebuilding it. You can delete the existing hierarchy and recreate it, ensuring that all nodes are correctly defined.
  
  
  
  Transport Consistency:
  
  If the issue arose after a transport, verify that all related objects were transported correctly. Check for any missing dependencies or inconsistencies in the target system.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and notes. Sometimes, SAP releases notes that address specific issues related to OLAP and hierarchies.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be known issues or patches available.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the code where the error occurs to get more insights into the specific conditions leading to the error.
  
  
  
  Related Information:
  
  Transaction Codes: RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), RSC1 (Hierarchy Maintenance).
  SAP BW Documentation: Review the official SAP BW documentation for more details on hierarchy management and OLAP processing.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to identify and resolve the cause of the BRAINOLAPAPI150 error in your SAP BW environment.