How do Oracle ebs users from UK make use of ebs for UK VAT Submission?

Hi

In general, how do Oracle ebs users from UK make use of ebs for UK VAT Submission? Esp on manual GL transactions that requiring VAT related transactions.

I understand that we are not able to upload VAT related GL journals into GL module unless we use DFF to capture the VAT amount and code for reporting purposes - but with DFF there is no validation - is there a way to enforce validation?

Thanks in advance