The purpose of this document is to identify alternative methods for drilling through another report using the Cognos Mashup Service and HTML Items. Currently the Cognos Mashup Service does provide drill through capability as identified in the documentation and samples provided but it does require some effort on the development side to implement. Individuals who might not have that development expertise or are more comfortable with Cognos Report Studio can quickly use the method provided in this document to achieve drill through capability.
Here is an example of what the source report looks like using a CMS rest call.
Here is a document with more details and sample reports as well: