You may get an authentication error if your HMRC e-filing credentials are either wrong or incomplete. If you have not received your own HMRC E-Filing credentials you will have to register yourself as an 'Organization' using HMRC's Online Services from the link Click here and then enter the HMRC e-filing credentials in our application.
The HMRC E-Filing Credentials are:
PAYE Reference Number
Accounts Office Reference Number
HMRC given User ID
HMRC given Password
For more information on HMRC E-Filing Credential contact HMRC.
Road Map – E-filing Credentials Set Up
Employer/Setup -> Chart of Setup- > E-Filing -> E-Filing Setup -> Edit button -> Save button
( 'Employer/Setup' is the button positioned in the tasking zone menu at the top. It is the First button from the right )
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