Online filing errors

The following are the most frequent errors that arise when attempting to file the company tax return, CT600, and the company accounts online.

Error Message	Further Details
Online Filing Error 1046. The supplied user credentials failed validation for the required service	Details
The accounting period for this amended return does not match the records currently held for the company	Details
Online Filing Error 1611: No original return yet recorded	Details
Online Filing Error 1612: Cannot file an amendment after the allowable due date	Details
iXBRL Online Filing Error 3303: One of the InlineXBRLdocuments contains malformed xml	Details
Online Filing Error 3304: Original return already received for this period	Details
Online Filing Error 3312: Name of Director signing Directors Report is missing	Details
iXBRL Online Filing Error 3314: Inconsistent duplicate fact values	Details
iXBRL Online Filing error 3315: Generic dimension member has no associated name or description item	Details
XBRL submission error – cvc complex type.2.4.a: invalid content was found	Details
The ‘decimals’ attribute is invalid – The value is invalid according to its datatype	Details