Standard report does not show data through OData query instead shows the below message as in screenshot. However, when you execute the web browser report you can see the data.
Reproducing the Issue
Create the Odata URL according to prerequisites for any standard report which is assigned to any work center.
Example: For standard report "Employee Times: Monthly(HCMTLMU01_Q0002)"
It shows the above message in the response as in the screenshot "Property C0CHAR_STRUCTURE (Entity Type RPHCMTLMU01_Q0002): mandatory filter is missing".
Currently, this is system designed behavior.
Such reports with that structure cannot be queried through OData. It is expected behavior.
You can execute them only through web browser report.
KBA , property c0char_structure , mandatory filter is missing , AP-RC-ANA , C4C, ByD, Travel: Analytics Tools & Frameworks , Product Enhancement