3656160 - Jasper Report throws 'Resource not found at: report_xxx.jrxml' error in FSM (Incorrect Subreport Reference)

• The Jaspersoft report fails to generate in FSM and returns the error message CA-31.
• The same report runs successfully in Jaspersoft Studio without errors.
• on iOS, when generating the report, the jasper report template throws an error:"Error while building the report [XXXX]: Inet.sf.jasperreports.engine.JRException: Resource not found at: report_xxx.jrxml.]. "
  
  
  
  "Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."  

• SAP Field Service Management (FSM)

error CA-31, Resource not found at: report_xxx.jrxml, jasper report template, subreport expression, .jrxml file, .jasper file, iOS application, Analytics & Reporting, Jaspersoft , KBA , CEC-SRV-FSM-ANR , FSM Analytics and Reporting , CEC-SRV-FSM-IOS , FSM Mobile - iOS , Problem