Back Dating My First VAT Return

[QFSteve]

Hello @SpaceGhost

Unfortunately this error lies with HMRC so you would need to get in touch with them

I also found this similar issue in the forum

Making Tax Digital - HMRC Error Code 400

Hi. I am getting the following error code when I try and submit a return to HMRC: Hmrc Error Code: 400 Status: PERIOD_KEY_INVALID Message: Invalid period key I think everything is correctly set up. I go to Reports - VAT Returns. Create New VAT Return - it connects to HMRC and I get a list of open VAT obligations as currently reported by HMRC. I click “Prepare” on the one I need to complete. A VAT return is created with the Period Key 1019 which is correct. “File VAT Return electronically …