Easy mistake to make these days (Advance Child tax credit)

[Pacun]

Someone dropped documents and I saw that the IRS have sent them a letter stating that $1,800 were sent in advance for their two children.  Clients file jointly and failed to bring the wife's letter. When clients see the same amount of both letters and think they are duplicate. 

[Yardley CPA]

Yes...my wife and I received the letters reflecting the same amount on each.  My immediate thought was what you stated. 

To their credit though, the letter does indicate "If you file a joint return for tax year 2021, you must add the amount in Box 1 from both letters 6419 and enter the total amount on Schedule 8812".