How To Fix RS2HANA_VIEW127 - External SAP HANA view: 1ROWCOUNT not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RS2HANA_VIEW - HANA Views for BW Objects

• Message number: 127

• Message text: External SAP HANA view: 1ROWCOUNT not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS2HANA_VIEW127 - External SAP HANA view: 1ROWCOUNT not supported ?

  The error message "RS2HANA_VIEW127 External SAP HANA view: 1ROWCOUNT not supported" typically occurs in the context of SAP BW (Business Warehouse) when trying to access or query an external SAP HANA view that is not compatible with certain operations, particularly when it involves the use of the 1ROWCOUNT function.
  Cause:
  
  Incompatibility with HANA Views: The error indicates that the external HANA view you are trying to access does not support the 1ROWCOUNT operation. This can happen if the view is not designed to handle row counting or if it is a calculation view that does not return a single row.
  View Definition: The structure or definition of the HANA view may not be compatible with the BW query or the way it is being accessed.
  Query Design: The BW query may be designed in a way that expects a certain type of data return that the HANA view cannot provide.
  
  Solution:
  
  Review the HANA View: Check the definition of the HANA view to ensure it is designed to return the expected results. If it is a calculation view, ensure it is set up to return a single row or modify the query to avoid using 1ROWCOUNT.
  Modify the BW Query: If possible, adjust the BW query to avoid using operations that require 1ROWCOUNT. This may involve changing how the data is aggregated or filtered.
  Use a Different View: If the current HANA view cannot be modified, consider creating a new HANA view that is compatible with the BW query requirements.
  Consult Documentation: Refer to SAP documentation for any specific limitations or requirements regarding the use of HANA views in BW queries.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for using HANA views with BW.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Performance Considerations: Be aware that using complex HANA views can impact performance, so ensure that the views are optimized for the queries being run against them.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.