The query operation has exceeded the maximum row size of SQL Server.

You got something like: The query operation has exceeded the maximum row size of SQL Server. Please reduce the number of columns or joined tables. 

The reason for this is that the form-query structure is too large. For example:

 One way to address this is by reducing the number of fields, as you likely don't need all of the included fields. However, some coding adjustments will be necessary:

Override init for each data source:

I only need to display two specific fields out of the hundreds available here:

Repeat for next Data source..