|Error Code||Error ||Mandatory / Optional / Conditional||Solution|
|1000||System Failure - The submission of this document has failed due to an internal system error.|
This is an issue with the Government Gateway server. To resolve this, either wait and try again later or contact HMRC.
More information may be found here
The submitted XML document either failed to validate against the GovTalk schema for this
class of document or its body was badly formed.
There are invalid characters such as spaces in the submission credentials - the telephone number or contact name.
If you receive this message edit your contact details.
|1002||Authentication Failure||Check credentials|
|5012 – Invalid Format|
No DOB & No NINO Entered
|Date of birth||Conditional|
(not needed unless NINO missing)
|Invalid NINO – Format||Optional (should be present if known)|
|Employee’s Address – leading spaces and punctuation||Optional|
(unless other address lines present)
|Forename field – incorrect characters||Mandatory|
|Surname field - incorrect characters||Mandatory|
|Vehicle Make or Model - incorrect characters||Mandatory|
|5016||An element exists, but it has no entry within it.||Mandatory|
|7130||Works/ Payroll No||Optional|
|7540||Invalid NINO – Contents||Optional (should be present if known)|
*The National Insurance numbers with the prefix 'KC' are valid and customers receiving them should use them as normal.
If you are experiencing issues for an employee with this National Insurance number, the following steps should be taken:
|Date of Starting||Optional|
|Date of Leaving||Optional|
Below is a list of the common online filing error codes and the HMRC recommended solutions :