The Obama administration announced Friday that 80,000 corrected tax forms for people on plans through ObamaCare have still not gone out.

It’s unclear how many people will be affected by the delay, but the administration said people who have been notified of errors on their forms should wait to file if they can. If they have already filed, they do not need to refile unless they want to and will not have to pay any additional tax because of the error.

The issues stem from the announcement last month that 800,000 people on insurance plans through ObamaCare received incorrect tax information. At the time, the administration said forms with corrected information would be sent out in the first week of March.

Republicans pounced on the news, arguing it showed the burdens the Affordable Care Act is placing on families during tax season. They also said it showed the administration was having trouble administering its own law. 

The administration now says 740,000 of the corrected forms are in the mail and available online at HealthCare.gov accounts.

It said the remaining 80,000 forms will be mailed next week.

The White House has said the error could result in some people receiving a tax credit meant to subsidize health insurance coverage by mistake. 

On Friday, it said people who received the tax credit and had already filed their taxes based on the incorrect forms would not have to refile and could keep the extra tax credit. The administration previously gave this flexibility to 50,000 people who had filed their taxes at the time the original error was announced.

“What we don’t know is how many [people] have already filed,” Mark Mazur, assistant Treasury secretary for tax policy, said on a call with reporters. “We think it’s a relatively small number.”

This article was updated at 3:24 p.m.