How To Fix SDDL_PARSER_MSG280 - $$projection is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 280

• Message text: $$projection is not allowed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG280 - $$projection is not allowed ?

  The SAP error message SDDL_PARSER_MSG280 with the description $$projection is not allowed typically occurs in the context of SAP's Semantic Data Definition Language (SDDL) when there is an issue with the way a projection is defined in a query or data model.
  Cause:
  
  Invalid Projection Syntax: The error usually indicates that the projection syntax used in your SDDL statement is incorrect or not allowed. Projections are used to specify which fields or attributes to include in the result set, and if the syntax does not conform to the expected format, this error can occur.
  Unsupported Features: The specific projection you are trying to use may not be supported in the context of the operation you are performing. This could be due to limitations in the version of SAP you are using or the specific data model.
  Misconfiguration: There may be a misconfiguration in the data model or the way the query is structured, leading to the projection being deemed invalid.
  
  Solution:
  
  Check Syntax: Review the SDDL query or data model definition for any syntax errors. Ensure that the projection is defined correctly according to the SDDL documentation.
  Consult Documentation: Refer to the official SAP documentation for SDDL to understand the correct usage of projections and any limitations that may apply.
  Simplify the Query: If possible, simplify the query to isolate the issue. Start with a basic projection and gradually add complexity to identify what specifically is causing the error.
  Update SAP Version: If you are using an older version of SAP, consider updating to a newer version that may have improved support for projections and other features.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP data modeling and SDDL.
  
  Related Information:
  
  SAP SDDL Documentation: Familiarize yourself with the official SAP documentation on SDDL to understand the rules and guidelines for writing valid queries.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Error Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.