Error: The path of the item ” is not valid. The full path must be less than 260 characters long; other restrictions apply. If the report server is in native mode, the path must start with slash. (rsInvalidItemPath)
Description: An SSRS related bug, when the Report path given to ServerReport web control is wrong this error shows up.
<ServerReport ReportPath=”ReportProject1/Report1″ ReportServerUrl=”http://server name/ReportServer” />
Solution: Correct the ReportPath by giving valid deployed folder path. In above tag one forward slash was missing from the ReportPath property.
<ServerReport ReportPath=”/ReportProject1/Report1″ ReportServerUrl=”http://server name/ReportServer” />