How To Fix SDDL_PARSER_MSG473 - No alias can be specified for associations in projection views

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 473

• Message text: No alias can be specified for associations in projection views

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG473 - No alias can be specified for associations in projection views ?

  The SAP error message SDDL_PARSER_MSG473 indicates that there is an issue with the use of aliases in projection views, specifically when dealing with associations. This error typically arises in the context of SAP HANA or when working with the SAP Business Technology Platform (BTP) and its data modeling tools.
  Cause:
  The error occurs when you attempt to define an alias for an association in a projection view. In SAP's data modeling, projection views are designed to simplify the representation of data by allowing you to select specific fields from a data source. However, associations (which define relationships between different entities) cannot have aliases assigned to them in projection views. This restriction is in place because aliases are meant for fields, not for the relationships themselves.
  Solution:
  To resolve this error, you should:
  
  
  Remove the Alias: Check your projection view definition and locate any instances where you have assigned an alias to an association. Remove the alias from the association definition.
  
  
  Use Field Aliases: If you need to rename fields for clarity or to avoid naming conflicts, ensure that you are only applying aliases to the fields themselves, not to the associations.
  
  
  Review Documentation: Consult the SAP documentation for the specific version of the tools you are using to ensure compliance with the latest guidelines regarding projection views and associations.
  
  
  Test the View: After making the necessary changes, test the projection view to ensure that it functions correctly without the alias on the association.
  
  
  Related Information:
  
  Projection Views: These are used to create a simplified view of data by selecting specific fields from one or more tables or views.
  Associations: These define relationships between different entities in the data model, allowing for more complex queries and data retrieval.
  SAP HANA Modeling: Understanding the principles of data modeling in SAP HANA can help prevent similar issues in the future. Familiarize yourself with the concepts of views, associations, and how they interact.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support or consulting the SAP Community for further assistance.