starting to think that #XSD and #REST don't mix because of #UPA. REST wants models to be open for evolution; UPA makes openness rather hard.

@dret IMO, #XSD/#UPA and #REST are both placeholders for the #CWA (g.mamund.com/ptdry ) v. #OWA (g.mamund.com/hevek ) POVs.

@mamund it's interesting to ponder the deeper source of the #UPA problem: it's not on the validation side of #XSD, it's the #PSVI creation.

@dret once again, the application of #OOP causes "problems" and, for many, results in marking the source content(msg) in error.

@mamund starting to wonder whether schemas should be regarded as client-side: they represent the processing capabilities of the client.

@dret More generally, validating outgoing messages against a schema is perfectly in line with Postel's law, for requests and responses alike

@stilkov i am all for conservative sending (honoring the rules), but liberal receiving has bounds, very tight ones in business settings.

@dret E.g. what kind of rigid validation needs to be applied to an incoming order? Acknowledging what you understood may be the best option.

@stilkov if you submit a bad delivery address, i might fix it for you, but should confirm with you before assuming it was what you intended.