Excess service tax.

Mayank agarwal (Student) (45 Points)

17 October 2013  
An assessee who has collected ST frm a client is unable to perform the service. briefly explain the situations in which and d the conditions subject to which he can adjust the ST relating to above, agnst his forthcoming service tax liability. It is a question frm practice manual. I have d answer but im not able to grasp it fully. What i understood is dat he can adjust it on pro rata basis. Is that all?? Can u plz tell me in sum simple language. Im getting confused here. Please help. :(