Cannot get a New Item form to successfully Submit - Error message unhelpful
I'm testing an app form created with the new Common Data Service for Apps. The form is working on a custom entitiy with 12 columns and a single lookup. The form works fine when editing existing items, but errors out on any attempt to create a new item.
I have triple-checked that the values going in are the right data types with the right formatting but I keep getting a really vague error back:
The requested operation is invalid.
Server Response: A value must be provided for item.
Based on other user's issues I've googled, this error should show a column name as well, but my error does not.
I attempted to diagnose further by using the Errors function on the datasource and displaying it to a table. It only displays one error with the following values:
Error Kind: 8 (Correlated to the Error Kind "ConstraintViolated")
Message: The Requested Operation is Invalid
This error message does not tell me which constraint was violated, nor which column it is referring to. I have attached a screenshot of my error screen if it's of any use.
Any ideas on how to get this to successfully add a new item when I do SubmitForm?
Info on my app & Settings:
Data Source: Common Data Service for Apps
Enabled Preview Features:
Explicit Column Selection
Improved App Rendering
Enabled Experimental Features:
Formula-Level Error Management
Control Property Optimization
Use Column Display Names (I attempted this also with this turned off with the same errors)
Use Longer Data Cache Timeout and Background Refresh
Try the Enhanced Group Control
Use GUID data types instead of strings
Use the Common Data Service Experimental Connector (Needed for file attachments)