Hello,

Any help appreciated. I am trying to submit a VAT return. Have been MTD registered for a long time now, had no previous issues submitting through Quickbooks. Go to submit to HMRC and get the error message below and the page just returns to my "prepare return" screen. I'm not trying to change anything in the return, simply submit it using the standard method that has worked before. 

I have cleared the cache on two different laptops and both show the same message, I have checked my connection to HMRC and no issues there either. Thank you.