I am not quite sure of your exact question but wanted to give you some information on dependent information for the Advanced Child Tax payments if that is what you are referring to. Here is a link to the update portal: https://www.irs.gov/credits-deductions/child-tax-credit-update-portal
It will not be active until mid-August.
In addition, here is a link to FAQ's on the advanced credit: https://www.irs.gov/credits-deductions/2021-child-tax-credit-and-advance-child-tax-credit-payments-f...
Hope this helps!
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