It's a Relius issue. From Relius:
FIS has identified an issue impacting a selection of Form 5500 series EFAST submissions for form year 2020. Form 5500 series filings with internal attachments created using Relius Government Forms (RGF) software templates did not include those attachments in the electronic submission to EFAST. Pursuant to direction from the US Department of Labor (DOL), FIS will resubmit the impacted Form 5500 series forms, with attachments, to EFAST on behalf of all impacted plans. The DOL has indicated that they intend to take no further action against plans impacted by the incomplete electronic submissions.
FIS has identified an issue impacting a selection of Form 5500 series EFAST submissions for form year 2020 that included internal attachments. Internal attachments are attachments to the Form 5500 created using templates in RGF ASP. The most commonly generated internal attachments are the reasonable cause explanation for late filing, the schedule of assets, the weighted average retirement age, and the CSEC participating employer list. It was discovered that internal attachments were not included in the electronic data transmission to EFAST for 2020 form year submissions. This issue was remediated in RGF ASP on August 17, 2020 for Form 5500 and Form 5500-SF filings, and on August 19, 2021 for Form 5500-EZ filings. Any form year 2020 filings with internal attachments, filed prior to remediation would have been impacted.
As providers of EFAST-certified software, FIS has worked with EFAST and the DOL to address this issue. FIS has provided the DOL with a list of all impacted EFAST submissions and the DOL has directed FIS to automatically resubmit the impacted forms with the attachments. FIS will resubmit the impacted filings the week of August 23, 2021. No action is required from your firm or plan sponsors for the resubmission process.
The DOL recognizes that the plan sponsors and administrators signed the Form 5500 filings with the attachments and it was the data transmission process that excluded these internal attachments. Accordingly, the DOL informed FIS that they will take no actions against impacted plans based on the omitted attachments. The DOL will notify the IRS, and while unlikely, it is possible your clients may receive a notice from the IRS or DOL regarding the missing attachments. FIS has posted here a "reasonable cause" letter that can be used in response to any such inquiries.
IMPORTANT: The DOL indicated the initial submissions (with the omitted attachments) cannot be deleted from EFAST, and once the filings are resubmitted, both filings will be visible on the EFAST website. Please contact Customer Care for a listing of your customers impacted by this issue, if needed.
FIS will resubmit impacted Form 5500 filings via EFAST during the week of August 23, 2021. All Form 5500 EFAST transmissions submitted after August 19, 2021 will include the associated attachments.