Ftax will return one of three types of receipt:
Success – This will feature a green band across the top and confirm that your submission has been accepted by HMRC. If you have submitted an Amended return, be very careful to only do this if you have previously submitted a successful return. If you don’t then HMRC may fine you even though the receipt signaled a successful submission.
Acknowledgement – This is returned if HMRC are busy. An email will be sent when the submission finally reaches HMRC to confirm whether it has been successful or not.
Error – This will feature a red band across the top and give a reason for failure. If you do not understand the error message (which is usually sent directly from HMRC) then cut and paste it into a Support Request.