How To Fix SDDL_PARSER_MSG108 - Return column has incorrect form or contains a reserved word

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 108

• Message text: Return column has incorrect form or contains a reserved word

What causes this issue?

A list of return parameters is enclosed within curly brackets '<ZH>{ }
</>' and must be in the following form:
[<(><<)>Annotation_1>] <(><<)>r_par_1>:<(><<)>Namespace_1>.<(><<)>Typ_1>
[<(><<)>Post_Annotation_1>];
...
[<(><<)>Annotation_n>] <(><<)>r_par_n>:<(><<)>Namespace_n>.<(><<)>Typ_n>
[<(><<)>Post_Annotation_n>]
The following rules must also be observed:
Each parameter specification must be closed with ';'' because here you
are dealing with a CDS declarative statement.
For the column labels, you should adhere to the general rules for CDS
labels:<DS:ABEN.CDS_GENERAL_SYNTAX_RULES>ABAP CDS - General Syntax Rules
</>
You will find the complete syntax description in the chapter
<DS:ABEN.CDS_F1_DEFINE_TABLE_FUNCTION>CDS Table Functions</> of the ABAP
documentation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG108 - Return column has incorrect form or contains a reserved word ?

  The SAP error message SDDL_PARSER_MSG108 indicates that there is an issue with the return column in a data definition or query. This error typically arises when the return column is either incorrectly formatted or contains a reserved word that is not allowed in the context of the query or data definition.
  Causes:
  
  
  Incorrect Format: The return column may not be defined correctly. This could include issues such as:
  
  Missing or incorrect data type specification.
  Incorrect naming conventions (e.g., using special characters).
  
  
  
  Reserved Words: The return column name may be using a reserved keyword in SQL or the specific context of the SAP system. Reserved words are terms that have special meaning in the programming language or database and cannot be used as identifiers (like column names).
  
  
  Solutions:
  
  
  Check Column Naming:
  
  Ensure that the return column name does not use any reserved words. You can refer to the documentation for the specific database or programming language to find a list of reserved words.
  Rename the return column to something that is not a reserved word.
  
  
  
  Correct Format:
  
  Verify that the return column is defined correctly according to the expected syntax and data types.
  Ensure that the naming conventions are followed (e.g., no spaces, special characters, etc.).
  
  
  
  Use Quotation Marks:
  
  If you must use a reserved word as a column name, you can often enclose it in quotation marks or brackets (depending on the database) to indicate that it should be treated as an identifier rather than a keyword.
  
  
  
  Review Documentation:
  
  Consult the SAP documentation or the specific module documentation for guidelines on naming conventions and reserved words.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Community Forums: Look for discussions in SAP community forums or other technical forums where similar issues may have been addressed.
  Testing: After making changes, test the query or data definition again to ensure that the error has been resolved.
  
  By following these steps, you should be able to resolve the SDDL_PARSER_MSG108 error and successfully execute your query or data definition.