by mistake wrong gstr-1 uploaded in f.y 2017-18

Somnath Sengupta (27 Points)

11 July 2019  
Sir, in the f.y 2017-18 by mistake in the gstr-1, in place of taxable value the invoice value is uploaded whereas in invoice value the taxable value is uploaded.
By this mistake, it was effecting to file gstr-9
please give me advice how to rectify my and gstr-1 and how to file correct gstr-9