We are migrating SSRS 2008 R2 reports to SSRS 2012. And able to successfully migrate to SSRS 2012.
Everything went smooth expect some reports which were using reporting services. These reports are calling the reporting service webservice and was passing in a huge xml parameter. This XML parameter would work fine for smaller string lengths but failed for larger strings and the error reported is "Invalid URI: The Uri string is too long"
Went through many discussions and could not find any solution.
Observed that, if we pass the XML data upto 65520 characters, then the report works fine and anything greater than 65520 characters it throws an Error
We would like to see...if there is any solution or alternate solution for this issue.