Is 6% an acceptable error rate?

The government has confessed to a 6% error rate relative to at least one type of error: it failed to inform insurance companies about some people who had chosen health plans on HealthCare.gov. But the insurance companies say that when they are informed there are still errors in some cases. Some of the errors:

• the home address for a new policyholder was outside an insurer’s service area. 
• a child was listed as the main subscriber — the person responsible for paying premiums — and parents were listed as dependents. 
• children were enrolled in a policy by the federal government and parents were left off, or vice versa. 
• the government mixed up the members of a family: A child or spouse was listed two or three times in the same application.