Error Handling - Containers vs. Component

[vstefano]

Good morning,
I have a flow with two containers and an error flow control (try data port/catch errors).
Using the two containers the flow does not work. If I transform the two containers in a component, then it workds (I understand that the component is considered as a unique node hence this is why it works).

But I keep not understanding why I am forced to create the component if I have inserted the error check before the first container. It should work in both cases.

I am just curious to understand the technical reason behind it.

[mlauber71]

@vstefano this is a know problem and there is a ticket for it (AP-5069)

Try-Catch: Active Scope End node in inactive branch not allowed

This seems to have been around for some time then …

Understanding Problem Error Handling Loop

@robbsen OK I think I built something you might be able to work with. The important points are: encapsulate your loop in a component. Otherwise KNIME seems to have a problem to identify the Try-Catch block provide an empty table with the same structure as the one you want to collect at the end of a loop. I think you also could just use one table with one column and allow changing data structures in your Loop-End (you might have to clean that up later) I have not fully worked out the use of the…