Hi all,
I would appreciate if anyone could suggest how to test VAT return on UAT multiple times.
This is on our UAT environment, I have succesfully submitted VAT return for Apr 2017 to Jun 2017 which implies all of my configuration is correct, now I need customer to test it again to sign off.
However it seems only one submission can be accepted as when I submit again, I got an errror message saying "the VAT return was already submitted for the given period"
To resolve this issue, I have tried :
1. To submit a new period, but I got same error message, it seems from UAT, you can only submit Apr 2017 to Jun 2017.
2. Get a new tax registration number of organisation via this page
https://developer.service.hmrc.gov.uk/api-test-user and put this number into electronic message processing >addtional information, but then I got an error message of 500 when I request VAT obligation.
It's test environment, I don't believe it can only test once, can anyone suggest how to submit again? many thanks in advance!