How To Fix DDLS181 - Unknown expression at current position

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 181

• Message text: Unknown expression at current position

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS181 - Unknown expression at current position ?

  The SAP error message DDLS181: Unknown expression at current position typically occurs during the execution of a Data Definition Language (DDL) statement, such as when creating or altering database objects (like tables, views, etc.) in the ABAP Dictionary or when using the Data Definition Language (DDL) in ABAP programs.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Syntax Error: There may be a syntax error in the DDL statement. This could be due to a typo, missing keywords, or incorrect use of SQL syntax.
  Invalid Identifier: The statement may reference an identifier (like a table name, column name, etc.) that does not exist or is misspelled.
  Unsupported Expression: The DDL statement may contain an expression or function that is not recognized or supported in the current context.
  Contextual Issues: The error can also occur if the DDL statement is not valid in the current context, such as trying to use a command that is not allowed in a certain database version or configuration.
  
  Solution:
  To resolve the DDLS181 error, you can take the following steps:
  
  
  Check Syntax: Review the DDL statement for any syntax errors. Ensure that all keywords are correctly spelled and that the statement follows the correct syntax rules for the specific DDL operation you are performing.
  
  
  Validate Identifiers: Ensure that all identifiers (table names, column names, etc.) used in the statement are valid and exist in the database. Check for any typos or incorrect references.
  
  
  Review Expressions: If your DDL statement includes expressions or functions, verify that they are supported in the context you are using them. Consult the SAP documentation for the specific SQL dialect you are working with.
  
  
  Use Transaction Codes: If you are working within the ABAP Dictionary, use transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to check the definitions of the objects you are working with.
  
  
  Debugging: If the error occurs in an ABAP program, consider using the debugger to step through the code and identify the exact point where the error occurs.
  
  
  Consult Documentation: Refer to the SAP Help Portal or relevant documentation for guidance on the specific DDL commands and their syntax.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the DDLS181 error.
  ABAP Documentation: Review the ABAP documentation for details on DDL syntax and usage.
  Community Forums: Consider searching or posting in SAP community forums for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to identify and resolve the cause of the DDLS181 error in your SAP environment.