John,
I have seen a few people add fields to a RN PIP and had it work nicely. I would think that would be cleaner than putting all additional information in the FreeFormText field. Maybe not easier, but cleaner.
You should be able to modify the PIP DTD and schema (or PIP record in webM Developer directly if you choose) and be good to go. You’ll need to make sure all partners you choose to engage in conversations with have the same DTD but that’s all you’ll have to do.
as to how long it would take, it’s hard to say. If you’re a beginner it may be a bit too much for a first project, though, as DTDs are fairly complex and sensitive documents.
hope that helps,
pat
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