Please find attached a v2 which hopefully takes into account all your points above.
Open question: should it gather more PQerrorResultField, or the two selected one are enough? If more, which should be included?
I don't think so it is necessary. No in this moment. ERROR_CODE and ERROR_MESSAGE are fundamental - and if we add other, then we should to add all. Has not sense to add only some.
Ok. I'm fine with stopping at CODE & MESSAGE.
I have not any other comments. The implementation is trivial. I rerun all tests and tests passed.
