Hi everyone,
I am trying to test the UK MTD VAT submission process in the sandbox environment.
In the process, I was able to retrieve the VAT obligation successfully and the JSON file is also attached properly.
However, the 'Import response' button is grayed out and I cannot proceed with the VAT submission test because of this reason.
I have checked and confirmed all the latest versions of the electronic reporting configurations are set up in the system now.
Also, I have created a new test user account and set up the VAT number properly.
Can anyone support me on this matter, please?


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