How To Fix SDDL_PARSER_MSG281 - $$projection not permitted in group by clause

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 281

• Message text: $$projection not permitted in group by clause

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG281 - $$projection not permitted in group by clause ?

  The SAP error message SDDL_PARSER_MSG281 with the description $$projection not permitted in group by clause typically occurs in the context of SAP HANA or when working with SQL queries in SAP systems. This error indicates that there is an issue with the way the GROUP BY clause is being used in your SQL query, particularly with respect to the projections (or selected columns) that are included.
  
  Cause:
  The error arises when you attempt to use a projection (a column or expression) in the GROUP BY clause that is not allowed. This can happen for several reasons:
  
  Invalid Columns: You may be trying to group by a column that is not part of the selected columns or is not an aggregate function.
  Complex Expressions: If you are using complex expressions or functions in the GROUP BY clause that are not supported.
  SQL Syntax: There may be a syntax error in your SQL query that is causing