If you mean AY 2018-19, then the last date for filing as well as revision of the same was 31st March, 2019, hence that opportunity is no longer available to us.
As an alternate option, you can apply to your Assessing Officer for:
1) rectification u/s 154, which he may allow for
2) condonation, after approval of which, you can file return under section 119(2)(b)
Please note that condonations are generally required to be filed with commissioner and not Assessing Officer.
And if you meant FY 2018-19, then the revision for the same can be done upto 31.3.2020 but will be considered only if the assessment isn't completed. However, since the refund has been received already, the assessment has been completed and once again, you're left with the two options mentioned above.
Hope this helps
Regards