How To Fix RSB_GUI048 - No key field was defined

SAP Error Message - Details

• Message type: E = Error

• Message class: RSB_GUI - Open Hub Destination - GUI

• Message number: 048

• Message text: No key field was defined

What causes this issue?

No key field was selected for the open hub destination.
A key is necessary, however, for destination type &1& in order to
create a corresponding table on the database.

System Response

The action is terminated.

How to fix this error?

Maintain at least one key field or set the indicator <ZK>Technical Key
</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSB_GUI048 - No key field was defined ?

  The SAP error message RSB_GUI048: No key field was defined typically occurs in the context of SAP BW (Business Warehouse) when working with queries or InfoProviders. This error indicates that the system is unable to identify a key field for the data being processed, which is essential for uniquely identifying records in the data model.
  Cause:
  
  Missing Key Field Definition: The most common cause is that the InfoObject or InfoProvider does not have a key field defined. Key fields are necessary for uniquely identifying records in a data model.
  Incorrect Query Design: If you are designing a query and have not specified a key field, or if the key field is not included in the query definition, this error may occur.
  Data Source Issues: If the data source (like an InfoCube or DataStore Object) does not have a proper key field defined, it can lead to this error.
  Transport Issues: If the object was transported from one system to another, there might be inconsistencies in the key field definitions.
  
  Solution:
  
  
  Define Key Fields:
  
  Go to the relevant InfoObject or InfoProvider in the SAP BW modeling tools.
  Ensure that a key field is defined. This is usually done in the attributes of the InfoObject.
  For InfoProviders, check the key fields in the data model and ensure they are correctly set.
  
  
  
  Check Query Design:
  
  Open the query in the Query Designer.
  Ensure that at least one key field is included in the query definition.
  If necessary, add a key field to the query.
  
  
  
  Validate Data Source:
  
  Check the data source (InfoCube, DSO, etc.) to ensure that it has the necessary key fields defined.
  If you are using a composite provider, ensure that the underlying providers have key fields defined.
  
  
  
  Transport Consistency:
  
  If the object was transported, check for any inconsistencies or missing definitions in the target system.
  You may need to re-transport the object or manually adjust the definitions.
  
  
  
  Rebuild or Refresh:
  
  Sometimes, rebuilding the query or refreshing the data model can resolve issues related to key fields.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to this error message for any specific patches or updates that may address the issue.
  Documentation: Refer to SAP BW documentation for best practices on defining key fields and designing queries.
  Community Forums: SAP Community and other forums can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation.