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Amended CT600

Hi, I need to file an amended CT600 for period ending 30 Nov 2024.
Your CT600 form flow has no option to mark submission as amended/replacement, so HMRC rejects with Error 3001 – original already received.
Please enable/trigger an amended CT600 submission for this period or advise the exact step where I can mark it as amended.
Company: MY GLOBE INTERNATIONAL LTD (13025757), UTR 1869527492.

5 Comments

T
Tim Fouracre Staff 29 Nov 2025 at 07:25
Hi Tomas,

Thanks for reporting this - you're absolutely right that we didn't have support for amended CT600 returns.

Good news: We've just deployed a fix for this!

Here's how to file your amended CT600:

1. Go to your Dashboard and find MY GLOBE INTERNATIONAL LTD
2. Click on the period ending 30 Nov 2024
3. You should now see a blue "Amendment Required" panel (instead of the red error panel)
4. Click the "File Amended Return" button
5. Your previous form data will be pre-filled - make any changes you need
6. Submit as normal - the system will now send it as an amended return
(ReturnType="amended")

The change is live now, so you should be able to proceed immediately.

Let us know if you have any issues!
T
Tomas Skrodenis 29 Nov 2025 at 16:41
No blue button appears. Checked everywhere.
T
Tim Fouracre Staff 29 Nov 2025 at 16:53
Could you hard refresh the page? Cmd+shift+r on a mac or ctrl + f5 on windows.

You should see the red "Error" on the dashboard. If you click on that there should be a blue info box telling you the return has already been submitted and then a green button to "File Amended Return →".

I think the refresh will sort it out as this is a new feature.
T
Tomas Skrodenis 29 Nov 2025 at 17:12
That still doesn't sort the issue. I've even tried different browser. However, is there a way for you to manually delete yesterday submitted TC600 to CH? I ment to do the amend to HMRC, but instead it got submitted to CH. In Filling History it doesn't let to do anything. Thanks
T
Tim Fouracre Staff 29 Nov 2025 at 17:54
I've sent you an email with screenshots. Let's pick it up on email.