How to Import List Items having same names as that of its parents?

I have a List A whose Parent is List B.
Now for few items in list A have their names same as that of its respective parents in List B.
When Iam importing Items into List A, all the items are getting imported except those items whose names are same as that of its parents in List B.
The error that is coming is Key for this row maps to more than one list member.

But when Iam creating those items manually under their respective parents, they are getting created.

Can anyone help me to solve this problem?

Thanks

Meda Ganesha Manikanta

Matasma Digital Technologies