RTTCapital gains self assessment when already submitted RTTR

Hi there, I'm a little confused about what to fill in on the SA capital gains section when I have already submitted an RTTR earlier in the year as I don't want to submit it twice by accident. Say I submitted an RTTR of £30,000. 1 disposal which I have not yet paid tax on. What do I fill out below? I understand I enter the value in the RTTR section again but what about the first few questions. Do I leave blank if the RTTR already submitted is the only one I wish to report for that year? Number of disposals: (optional) Disposal proceeds: (optional) £ Allowable costs (including purchase price): (optional) £ Gains in the year, before losses - do not include attributed gains where personal losses cannot be set off: (optional) £ Attributed gains where personal losses cannot be set off: (optional) £ Losses in the year: (optional) £ Total gains or losses on the disposal of an asset of this type reported on Real Time Transaction returns - include the individual amounts of gains in 'Gains in the year' and losses in 'Losses in the year': (optional) £30,000 Tax on gains on the disposal of an asset of this type reported on Real Time Transaction returns already paid: (optional) £0 Are you making any claims or elections? (optional) NO Thanks!

Hi,
You will still report ALL disposals for the year in the tax return and there is a section that you report the ones already reported so that you are not charged twice. If you have not paid the tax then leave the tax already paid box blank.
Thank you.