If I paid my kid for his purchase of residency for mortgage advance payment, where to enter that data in turbotax?

[mos-dini]

I paid my kid's mortgage advance payment to purchase a condo. Where to enter the related amount in the turbotax?

[TurboTaxSusan]

If you paid the money as a gift, then there is no need to put it on your tax return.

If you loaned the money to your child, then you only have to report any interest that they paid you. If they fail to pay you back then you can claim it as a bad debt, but you would need to have proof that you made attempts to have the money paid back.