How To Fix RSB4HANA155 - Error processing "LOOP/ENDLOOP"

SAP Error Message - Details

• Message type: E = Error

• Message class: RSB4HANA - B4HANA

• Message number: 155

• Message text: Error processing "LOOP/ENDLOOP"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSB4HANA155 - Error processing "LOOP/ENDLOOP" ?

  The SAP error message RSB4HANA155, which indicates an issue with "LOOP/ENDLOOP" in the context of SAP BW (Business Warehouse) or SAP HANA, typically arises during the execution of a data flow or transformation process. This error can occur for various reasons, and understanding the cause and potential solutions is essential for troubleshooting.
  Cause:
  
  Data Model Issues: The error may be due to inconsistencies or issues in the data model, such as incorrect data types or missing fields in the InfoObjects.
  Transformation Logic: There may be a problem in the transformation logic where the LOOP/ENDLOOP statement is not correctly defined or is trying to process an empty dataset.
  Performance Issues: If the dataset being processed is too large, it may lead to performance issues that cause the loop to fail.
  Incorrect Coding: If custom ABAP code is used in the transformation, there may be syntax errors or logical errors in the code.
  Data Source Issues: The data source might not be providing the expected data, leading to issues when the loop tries to process it.
  
  Solution:
  
  Check Data Model: Review the data model for any inconsistencies. Ensure that all required fields are present and correctly defined.
  Review Transformation Logic: Examine the transformation logic for any errors. Ensure that the LOOP/ENDLOOP statements are correctly implemented and that they handle empty datasets gracefully.
  Optimize Performance: If performance is an issue, consider optimizing the data flow or breaking down the dataset into smaller chunks for processing.
  Debug Custom Code: If custom ABAP code is involved, use the debugger to step through the code and identify any logical or syntax errors.
  Validate Data Source: Ensure that the data source is providing the expected data. You can test the data source independently to confirm that it is functioning correctly.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as some issues may have been resolved in newer versions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSB4HANA155 for any specific fixes or recommendations provided by SAP.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for BW and HANA to understand the expected behavior of LOOP/ENDLOOP in transformations.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support for further assistance.