While creating site in xendesktop 7, after all the prompts are over, it says configuring database etc.. after few mins you might get an error saying,

“There was no suitable service to perform operation.”

Resolution: Even though you get the error, your site is created successfully. Restart the server and open xendesktop studio. After restart, expand your Citrix Studio(your site name), you will find configuration option, expand it, and you will find Hosting option. Right click it and add connection and resources. Now create catalog. You can continue without any errors.