creating a simple HTML template

Hello All,

I have to create a simple HTML template for a screen in SRM for Mass change of a field on contracts. I have ITS service ready and I have created a HTML template with reference to the prorgam and screen. It generated following code. what change do I need to make to make the template displayed. When i run the template it gives me an error 'URL http://XXXXX/sap/bc/gui/sap/its/ysrm_ctr_mass/ call was terminated because the corresponding service is not available'.I have never worked on HTML templates before. Anybody wannna help me, pls?

Thanks,

Chandra