How To Fix RS2HANA_VIEW122 - External SAP HANA view: '&1' must be a dimension or free characteristic

SAP Error Message - Details

• Message type: E = Error

• Message class: RS2HANA_VIEW - HANA Views for BW Objects

• Message number: 122

• Message text: External SAP HANA view: '&1' must be a dimension or free characteristic

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RS2HANA_VIEW122 - External SAP HANA view: '&1' must be a dimension or free characteristic ?

  The SAP error message RS2HANA_VIEW122 indicates that there is an issue with the definition of an external SAP HANA view in the context of SAP BW (Business Warehouse) or SAP BW/4HANA. Specifically, the error states that the specified view must include a dimension or a free characteristic, which is necessary for the view to be properly utilized in reporting or data modeling.
  Cause:
  The error typically arises due to one of the following reasons:
  
  
  Incorrect View Definition: The external HANA view does not have the required characteristics defined as dimensions or free characteristics. This means that the view may not be structured correctly to be used in the context of BW.
  
  
  Missing Characteristics: The view may be missing key fields that are necessary for it to be recognized as a valid data source in BW.
  
  
  Data Model Misalignment: There may be a misalignment between the data model in HANA and the expectations of the BW system regarding how data should be structured.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the HANA View Definition:
  
  Open the HANA view in the HANA Studio or Web IDE.
  Ensure that the view includes at least one dimension or free characteristic. This typically means that you should have fields that can be used for grouping or filtering data.
  
  
  
  Modify the View:
  
  If the view does not have the required characteristics, you may need to modify it to include them. This could involve adding fields that are relevant for reporting or analysis.
  
  
  
  Validate the Data Model:
  
  Ensure that the data model in HANA aligns with the requirements of the BW system. This may involve checking the data types, field names, and ensuring that the view is properly exposed to BW.
  
  
  
  Re-activate the HANA View:
  
  After making changes to the view, make sure to re-activate it in HANA and then refresh the metadata in BW to ensure that the changes are recognized.
  
  
  
  Check BW Query:
  
  If you are using the view in a BW query, ensure that the query is correctly set up to utilize the dimensions and characteristics from the HANA view.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  Documentation: Refer to the official SAP documentation for BW and HANA regarding the creation and usage of external views.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the RS2HANA_VIEW122 error and ensure that your external HANA view is correctly defined for use in SAP BW.