title: Error subreport could not be shown
body: <p>I have a main report and its sub report, both have one tablix each in them. The sub report has same parameters as the main report, which are passed to the sub report during runtime. 
  FY and Month and DepartmentName. 
  FY and Month are single valued parameters, DepartmentName is multivalued parameter. 
  Main report has one tablix for Finance department and Subreport has the other tablix for Marketing department. </p>
  
  <p>Problem: the sub report works when I choose the following parameters during report runtime. 
  FY=2018; Month= Aug and DepartmentName = Marketing</p>
  
  <p>However the sub report throws an error when I change the main report parameter FY from 2018 to 2019.</p>
  
  <p>Now this parameter FY gets its year from a dataset on the Main report, which was where I changed the WHERE clause to have the dataset return 2019 as the input to the FY parameter. </p>
  
  <p>Error: Subreport could not be shown. </p>
  
  <p>Please advise, as I tried everything but nothing worked.</p>