I have a Donation Record.
There is a Child to the Donation called Tribute.
There is a Child to the Tribute called Acknowledgee.
I created all my fields for the NPSP Data Import Object, and in NPSP Settings, mapped my Tribute Object as a child to Donation.
****It's not letting me add my new Acknowledgee Object Group, though. It's not offering me the Tribute Object Group to select. (I did scroll - nothing below Recurring Donation.)
Please don't tell me I can't map a child to a child......
"Please don't tell me I can't map a child to a child......"
Okay, I won't tell you.
Just kidding... you can handle the truth. ;-) You can't map a child to a child.
https://help.salesforce.com/s/articleView?id=sfdo.NPSP_AM2_Connect_New_Object.htm&type=5
"You can connect additional objects that are directly related to Contacts, Accounts, or Opportunities."
You'll need to solve for this in another way, such as with Flow provided you account for what happens in larger batches if that's an issue.
