how to show service tax in audit fees entry

suman (accountant) (82 Points)

18 June 2017  
 I have passed entry in mar-16 audit fees dr. 
To audit fees payable with 40000+service tax

but in oct-16 bill received from auditor 50000+service tax 

And i have already claim the service tax in oct-16 to mar-17 return. 

Plz guide me what entry should be pass now to claim service tax.