vat credit not approve in tran 1

gaurav (account assistant) (22 Points)

23 August 2017  
dear,

i filled tran 1 in my portal and submit ot but when click on validation through evc some error has been occured...it shows system error and due for that i cant filed gstr 3b it says first approve trans 1 after you filled that...give some suggession for above problem....