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.

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