Error 7806: This submission cannot be accepted

There are a number of potential reasons :

HMRC His Majesty's Revenue and Customs is a non-ministerial department of the UK Government responsible for the collection of taxes, the payment of some forms of state support, the administration of other regulatory regimes including the national minimum wage and the issuance of national insurance numbers. aren't expecting this employer filing RTI Real Time Information is the current method for reporting PAYE to HMRC, comprising FPS and EPS submissions. returns until a later date

Contact HMRC Employer Helpline on 0300 200 3200 and ask them to set your RTI start date to the correct date.

Payroll Agent not authorised to file on behalf of this client

If you act as a tax agent or adviser, you must have formal authorisation External website to deal with HMRC on your client’s behalf.
It’s easiest to do this online using HMRC Online Services External website .