Conditional Validator

I have a question on conditional validator.
I have a fixed length flat file, there are some fields they are coptinally conditional.
For example if field A presents field B is mandatory.
I read the documentation, It says about Nth filed type fileds. But I have a fixed length fileds.
How can I achieve this?


I don’t think there is a way to do that in the schema/dictionary.
You will have to build this logic in the flow service.


Thanks Shubro