What does error 4002: Output column does not appear in input mean

SpeedySteven

I can't see why this error is being produced. the grouping step has all the data required to create the output.

Josh Boxer

Hi Steven

Are you grouping results of a Validate address step? If so we have seen this case previously and will work to resolve the issue.

If not would you be able to share an export https://docs.experianaperture.io/data-quality/aperture-data-studio-v2/monitor-data-and-troubleshoot/migrate-metadata/#exportfromaspace please so that we can investigate further.

Thanks