RCM Paid and Claimed in Sep 18

As per Press Released on 3/7/2018 by CBIC ,
Reverse charge in respect of Financial Year 2017-18 paid during Financial Year 2018-19: Many taxpayers
have requested for clarification on the appropriate column or table in which tax which was to be paid on reverse
charge basis for the FY 2017-18 but was paid during FY 2018-19. It may be noted that since the payment was made
during FY 2018-19, the input tax credit on such payment of tax would have been availed in FY 2018-19 only.
Therefore, such details will not be declared in the annual return for the FY 2017-18 and will be declared in the annual
return for FY 2018-19. If there are any variations in the calculation of turnover on account of this adjustment, the
same may be reported with reasons in the reconciliation statement (FORM GSTR-9C).

So of you have paid & claim in FY 2018-19 , then no need to report in 2017-18 , you can report the same in Fy 2018-19 annual return