Hello everyone, I am running a JasperReports Server v7.5.0 and I implemented a custom exporter following this guide: JasperReports Server Ultimate Guide | Jaspersoft Community While the Report Viewer part is working like a charm I am having trouble with adding it to the scheduler. I strictly following your naming conventions (I tinhk) except that <MyFormat> is not equal to the resulting file extension. But if I understood correctly this is recommanded but not mandatory. At the end I want to schedule the report through the reportExecutions REST resource but response tells me: Export format multifilexlsx not supported or misconfigured. Server log is printing absolutely nothing and deployment is fine. Hopefully someone can see what mistake I made. Thank you in advance & best regards, Christoph