def METHOD_NAME(legacy_region_name: str):
    if settings.SENTRY_MONOLITH_REGION == legacy_region_name:
        click.echo(
            "> No OrganizationMapping have been modified. Set 'SENTRY_MONOLITH_REGION' in sentry.conf.py to update monolith mappings."
        )
    else:
        qs = OrganizationMapping.objects.filter(region_name=legacy_region_name)
        record_count = len(qs)
        qs.update(region_name=settings.SENTRY_MONOLITH_REGION)
        click.echo(
            f"> {record_count} OrganizationMapping record(s) have been updated from '{legacy_region_name}' to '{settings.SENTRY_MONOLITH_REGION}'"
        )