Hi,
In Dev environment, I have two general list "L1 Maintenance Category" and "L2 Maintenance Detail". L1 got a Top Level Item setup and has been setup as parent hierarchy of L2.
In NUX, two Form (or button), B1 and B2, have been created to add list item into L1 and L2 respectively.
Button B2 works fine, user can click the B2 button to add a new item into L2 list. However, B1 returns "Failed to Create Item" error.
The User and I got Full Access to the model, we got the same error message.

I have tried to manually add a new item into L1 from model builder screen and it is working fine.
Where should I look into to resolve this issue?
Thanks,
Ivan