The IRS does not process returns in first in first out batches. They are processed individually and at different times. It can take anywhere from a few days to 3 weeks to update. Until the IRS starts processing it on their own, you may not find record of it or the website may say that you have put in incorrect information when tracking your federal refund. As your return moves through the system, the status of it will be updated accordingly. Continue checking the Where’s My Federal Refund? tool for updates. Updates are made daily, usually overnight. You may also download the IRS2Go app to check your Federal refund status.
https://ttlc.intuit.com/community/return-status/help/what-does-pending-mean/00/26331