How To Fix SDDL_PARSER_MSG107 - RETURNS must be followed by a parameter list in '{}'

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 107

• Message text: RETURNS must be followed by a parameter list in '{}'

What causes this issue?

The return value of a table function is a list of return parameters that
are enclosed within curly brackets '<ZH> { } </>':
<EX> [<(><<)>Annotation_1>] <(><<)>r_par_1>:<(><<)>Namespace_1>.<(>
<<)>Typ_1> [<(><<)>Post_Annotation_1>];
...
[<(><<)>Annotation_n>] <(><<)>r_par_n>:<(><<)>Namespace_n>.<(><<)>Typ_n>
[<(><<)>Post_Annotation_n>]; </>
Each parameter specification must be closed with ';' (
<DS:ABEN.CDS_F1_DEFINE_TABLE_FUNCTION>CDS Table Functions</>)

Error message extract from SAP system. Copyright SAP SE.