| 1016 | Cert is not active. | Download your ROS Certificate. |
| 1012 | Unable to authenticate request. Refer to technical reference documentation for details on digitally signing web service requests with a ROS Digital Certificate. | Download your ROS Certificate. |
| 1013 | Unauthorised request: ROS Digital Certificate has expired. | Download your ROS Certificate. |
| 1003 | Employer Registration Number not found. | Employer Registration Number not associated with PREM, or employers PAYE registration, tax head. |
| 1004 | Invalid format Employer Registration Number. | Employer Registration Number must be in the correct format of 7 digits, including leading zeros, followed by either 1 or 2 letters. |
| 1005 | Inactive Employer Registration Number. | Employer Registration Number must be active. |
| 1015 | Unauthorised request: Employer Registration Number and ROS Digital Certificate must be linked. | Your Employer Registration Number and ROS Digital Certificate must be link. Download your ROS Certificate. |
| 1006 | Invalid format AgentTAIN. | Agent TAIN must be a valid format. |
| 1007 | Inactive AgentTAIN. | Agent TAIN must be active. |
| 1008 | No active link between Agent TAIN and Employer Registration Number. | Agent TAIN and Employer Registration Number must link. |
| 1011 | Cert does not have appropriate permissions. | Set your ROS certificate up with permission to use enhanced reporting functions. |
| 2001 | Duplicate submission across SubmissionID, EnahncedReportingRunReference and EmployerRegistrationNumber. | Submission ID must be unique under Employer Registration Number and Enhanced Reporting Run Reference for the Tax Year chosen. |
| 2046 | An enhanced reporting submission must have at least one expenses/benefits to add/delete | An enhanced reporting submission must contain at least one expense/benefit or a Line Item To Delete. |
| 1009 | Invalid TaxYear selected based on the version of schema used. | Set your Pay Date to the current tax year. |
| 2051 | An enhanced reporting submission should not have the same lineItemId for a expenses/benefits and a lineItemToDelete | An enhanced reporting submission can't have the same line Item Id for an expense/benefit and a line Item To Delete. |
| 1017 | LineItem is required to delete the expenses/benefit. | Enter a Line Item to delete the required expense/benefit. |
| 1018 | Unable to delete line item because it has already been deleted. | The line item has been deleted. |
| 2049 | Invalid previous line item | Correct the previous line item. |
| 2007 | Duplicate LineItemID across the enhanced reporting run. | Line Item ID must be unique across an enhanced reporting run. |
| 4002 | EmploymentID required for specified PPSN. | Employment ID required for specified PPS Number/employee. Correct this in the Personnel tab of the employee's record. |
| 2050 | Unable to delete a expenses/benefits which has not been submitted | Unable to delete an expense/benefit that hasn't been submitted. |
| 1010 | Invalid format employee PPSN. | PPS Number must be in the format of 7 digits, followed by either 1 or 2 check characters. |
| 2009 | EmployerReference is mandatory if EmployeeID (PPSN & EmploymentID) is not included. | Enter your Employer Reference if you don't know the employee's Employee ID and PPS Number. |
| 2010 | Address is mandatory when EmployeeID (PPSN & EmploymentID) is not included. | Enter the address if you don't know the employee's Employee ID and PPS Number. |
| 2017 | The Date Of Birth must be today or earlier. | The employee's Date of Birth can't be in the future. |
| 2048 | Employee's Date of Birth is mandatory if the PPSN is not available | Enter the employee's Date of Birth if they haven't got a PPS Number. |
| 2018 | DateOfBirth cannot be dated 130 years ago or more. | The employee's Date of Birth can't be over 130 years ago. |
| 2019 | PayDate must be within the TaxYear specified in the header of the ERRSubmissionRequest. | Your Pay Date must be within the tax year specified in the header of the enhanced reporting submission. |
| 2601 | Whole days only to be reported | Remote working only allows whole days. |
| 2606 | Invalid date provided | The date can't be before 1 January 2024. |
| 2610 | Category and Sub Category must be related | The category and sub-category aren't compatible. |
| 2611 | Number of Days not to be reported with this category | Number Of Days reported in error. |
| 2501 | No details found for the Enhanced Reporting SubmissionID requested. | The Submission ID must match an Enhanced Reporting Submission received by Revenue. |
| 1111 | Not authorised to view this service | To be able to view details, link the agent TAIN and Employer Registration Number on or before the submission date.
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| 2506 | No details found for the Enhanced Reporting Run Reference requested. | The Enhanced Reporting Run Reference must match an Enhanced Reporting Submission received by Revenue. |
| 3014 | A PPSN or an employee ID must be provided for a lookup ERN by employee request | Provide a PPS Number for a lookup ERN request.
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| 3101 | Invalid Tax Year selected. Tax Year cannot be before 2024 | Tax year selected can't be before 2024. |
| 5001 | No active link between AgentTAIN and EmployerRegistrationNumber for the month. | Link Agent TAIN and Employer Registration Number for the month that the request relates to. |