reversal of output gst

sourabh jain (10 Points)

19 August 2019  
dear sir i have sold some material to my customer 6 months back in December 2018. Now the customer is not giving my payment he gave me a cheque also in gurantee and the cheque failed. i have put up a cheque return case against him in the court also.i want to know that can i claim my output gst back and if yes then what accounting entry will be passed