How To Fix SD_EXPRESSION026 - TABNAME = '*' only allowed for count( * )

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_EXPRESSION - Messages processing AST expressions

• Message number: 026

• Message text: TABNAME = '*' only allowed for count( * )

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SD_EXPRESSION026 - TABNAME = '*' only allowed for count( * ) ?

  The SAP error message SD_EXPRESSION026 with the description TABNAME = '*' only allowed for count( * ) typically occurs in the context of SAP SD (Sales and Distribution) when there is an issue with the way a query or a report is being constructed, particularly when using SQL-like expressions.
  Cause:
  This error arises when an SQL expression is incorrectly formed. Specifically, it indicates that the wildcard character * is being used in a context where it is not allowed. In SQL, * is often used to denote all columns in a table, but in this case, it seems to be used in a way that is not valid for the operation being performed. The error suggests that TABNAME = '*' is only permissible when using the COUNT(*) function, which counts all rows in a table.
  Solution:
  To resolve this error, you should check the following:
  
  
  Review the Query/Expression: Look at the SQL query or expression that is causing the error. Ensure that you are not using * in a context where it is not allowed. If you are trying to count rows, make sure you are using COUNT(*) correctly.
  
  
  Specify a Table Name: If you are trying to reference a specific table, replace the * with the actual table name. For example, instead of using TABNAME = '*', use TABNAME = 'your_table_name'.
  
  
  Check for Aggregation Functions: If you are using aggregation functions, ensure that they are correctly applied. For example, if you are counting records, ensure that you are using COUNT(column_name) or COUNT(*) appropriately.
  
  
  Consult Documentation: If you are unsure about the correct syntax or usage, refer to the SAP documentation or help resources for guidance on constructing valid queries.
  
  
  Debugging: If you are working with a custom report or query, consider debugging the code to identify where the invalid expression is being generated.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SQL Syntax: Familiarize yourself with SQL syntax and best practices, especially in the context of SAP queries.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.