How long do I have to make corrections after a report is rejected from the IRS?

For a "Rejected" filing, you have 60 days from the date of the rejection to make corrections and resubmit the filing. 

The IRS will only give us 60 days from the time of the original submittal to fix these rejections. If these are not fixed within this time frame, the IRS will not allow us to amend the filing later.

For filings that are 'Accepted with Errors' the IRS has simply advised that you submit your corrections as soon as possible.