Behaviour of copy condition for mappings

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1

I have noticed that even if I have a copy condition set for a field of a mapping, if there is any transformation flow invoked for that field, it still invokes that flow, even if the condition should fail.

I checked this by setting a copy condition as 1 == 2, and the transform flow was still invoked.

I need to stop the transform from executing if the input value is null, but it seems I am unable to do this, since no copy condition will stop the flow executing, and I am forced to check in my flow for a null value and exit.

Do I understand this correctly? Has anybody else come accross this behaviour?

2

The mapping condition does not control whether or not the transformer will be called. It controls mapping of the variable only.

If you need to conditionally call a service, use a branch step.