A tool used to validate the information on Forms W-2 is:

The Social Security Administration (SSA) provides the AccuWage software tool to help employers and third-party submitters check their W-2 electronic wage reports for formatting errors before uploading them via Business Services Online (BSO). AccuWage identifies common mistakes that would cause a file to be rejected, such as incorrect record lengths or invalid characters. While E-Verify (Option A) and SSNVS (Option B) are used to verify the work authorization and Social Security numbers of employees at the time of hire or throughout the year, they do not validate the structure or accuracy of the final year- end wage file. System edits (Option D) are internal software checks, but AccuWage is the specific, government-provided tool designed to ensure compliance with SSA EFW2 filing specifications.