One country, had misunderstood a part of the agreement and there was no agreement.
Parker also made it clear that it was not Canada either - despite its Trade Minister taking to Twitter last night to contradict reports from Japan's Trade Minister that an agreement in principle had been reached.
Parker's public revelation may put added pressure on the hold-out nation to find a resolution or to bow out and let the deal go ahead as TPP10.
The 11 leaders of TPP countries are due to meet about 8pm NZ time. Before that happens, Jacinda Ardern is due to meet the leaders of Vietnam, Japan and Malaysia, all TPP countries.
While that is going on, chief negotiators will be earning working overtime to iron out the "misunderstanding".
It is hard to believe that a deal could get this far - in fact to be virtually agreed - and a settlement not be found.
If nothing else, Parker's open briefing on important development is a welcome departure from rumour and speculation.