CGT 60 day return

I have submitted my SA Return for 2023/24 including declaring Capital Gains on the sale of my Buy To Let residential properties. I was not aware that I had to declare these gains on a 60 day return. I have now created a CGT account to declare these gains, however one of the first questions asks whether I have submitted an SA return. When I answer yes, the reply says "You'll need to change your Self Assessment tax return (opens in a new tab) by adding details of any UK property sales or disposals made during the tax year 6 April 2023 to 5 April 2024". I do not understand this comment as I have declared the gains on my submitted SA return. I assume this means I do not have to complete the 60 day return as I cannot go any further on the 60 day return portal unless I answer no to the question whether I have submitted a return. Please can you clarify as I do not want to incur any extra penalties by not submitting the 60 day return now.

Hi,
As you have already submitted the tax return, you now cannot complete a 60 day disposal.
However, you will still be liable to penalties and/or interest as you did not meet the filing requirement.
Payment of any gain is due within 60 days but by declaring this in your return only you have extended the payment deadling until 31/1/25, as such you will receive notification of the additional charges in due course.
Thank you.