How To Fix /IWBEP/SBDSP_UI121 - Selected node is not allowed for mapping

/IWBEP/SBDSP_UI121 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBDSP_UI -

• Message number: 121

• Message text: Selected node is not allowed for mapping

Self-Explanatory Message

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/IWBEP/SBDSP_UI121 - Details

• The SAP error message /IWBEP/SBDSP_UI121 Selected node is not allowed for mapping typically occurs in the context of SAP Gateway and OData services, particularly when working with the SAP Business Application Studio or SAP Web IDE. This error indicates that there is an issue with the mapping of nodes in your OData service, specifically that the selected node cannot be mapped to the target structure.
  Causes:
  
  
  Incorrect Node Selection: The node you are trying to map may not be valid for the operation you are performing. This can happen if the node is not part of the expected structure or if it is not allowed in the context of the mapping.
  
  
  Service Definition Issues: There may be issues in the service definition, such as missing or incorrectly defined entities, associations, or navigation properties.
  
  
  Authorization Issues: Sometimes, the error can arise due to insufficient authorizations to access certain nodes or entities in the OData service.
  
  
  Model