uBAQ Error when saving in BAQ designer

Creating a new uBAQ, and I’m getting the following error when trying to save.

This property cannot be set to a null value.
image

The error details don’t provide any clues to what field in the uBAQ is configured wrong.

Application Error

Exception caught in: Epicor.ServiceModel

Error Detail

Message: This property cannot be set to a null value.
Program: Epicor.ServiceModel.dll
Method: ShouldRethrowNonRetryableException

Client Stack Trace

at Epicor.ServiceModel.Channels.ImplBase`1.ShouldRethrowNonRetryableException(Exception ex, DataSet dataSets)
at Ice.Proxy.BO.BAQDesignerImpl.Update(BAQDesignerDataSet ds)
at Ice.Adapters.BAQDesignerAdapter.OnUpdate()
at Ice.Lib.Framework.EpiBaseAdapter.Update()
at Ice.UI.App.BAQDesignerEntry.BAQTransaction.Update()

Obviously its something on the Update tab… But not sure where

Not sure what it was, but I just removed the joined tables and their uBAQ mappings and its fine now.