What this EFAST2 message means
The DOL common-errors publication says these warnings can indicate that the plan sponsor/employer or plan administrator address is not a verified U.S. Postal Service address.
What to review
Check the complete address and ZIP code, place the street number first, and put care-of or similar information in the second address field when appropriate.
Use the exact filing message. EFAST2 messages can change by form year and filing facts. Do not make a filing change solely from this summary.
Official source: DOL/EFAST2 — Most Common EFAST2 Registration, Login, and Filing Errors.
Related tools
Reference-only page: LawFirmSoftware.com is not currently offering Form 5500 software for sale. This free page remains available as a filing reference. Browse Form 5500 resources.