title: SSRS 2008 R2 Subreport Will Not Display
body: <p>I've looked through all the other topics on this subject but I cannot find an answer. I have a report that utilizes a dataset that runs a stored procedure. That SP returns two rows, both of which I can display in a table in the report. So far so good.</p>
  
  <p>Next, I added a tablix which uses the same dataset. In the (only cell in the) detail row of the tablix I added a subreport. I added the parameters to the subreport (four of which come from the dataset and one of which comes from a main report parameter). I created a row group tied to an Id column on the dataset.</p>
  
  <p>What I expect to see when I run the main report: two instances of the subreport, one for each of the two rows returned by the SP.</p>
  
  <p>What I actually see: In ReportBuilder I only get the first instance of the subreport. If I call the report service from an application (rendering it as a .PDF) nothing of the subreport shows at all. In either environment, there are no errors showing in the report.</p>
  
  <p>What I've checked: I made sure all the various visibility options in the tablix, the row group, the subreport, etc. were set to always show. I also added some text to the subreport's NoRowsMessageproperty. That text is shown (one for each row) for the subreport when I try to run it from the Report Service. Why this would happen I also don't know, as the parameter values I supply are identical in both cases.</p>
  
  <p>My guess is that I've got something wrong in the way I'm doing the row group, but I don't know what it is.</p>