WRONG ENTRY ON RCM & ANNUAL RETURN

Sir,
We entered gst on rental income under RCM while filling Aug 2017 gstr3b but paid tax and entered correctly in gstr 1. While going through annual return the rental income of Aug 2017 is shown both as taxable income and RCM . The amount is shown as - 28,800cgst and - 28,800 sgst . Do this means that I need to pay the amount again? please reply.
Thanks and Regards
Abi