Form 971 is an internal code that is not relevant to the taxpayer.
If you claimed the EIC (Earned Income Credit) or ACTC (Additional Child Tax Credit), you will most likely see the message, "We have received your tax return and it is being processed" for several days after February 15th.
Where's My Refund? will be updated with projected deposit dates for most early EITC/ACTC refund filers by February 22.
The IRS expects the first of these refunds to be available in taxpayer bank accounts or on debit cards by the first week of March.
Refer to the following link for additional information: Refund Timing for Earned Income Tax Credit and Additional Child Tax Credit Filers