On the surface, the blunder was failing to square the retail deal with a coalition ally, the Trinamul Congress, led by Mamata Banerjee, a notoriously unreliable ally.
If Congress fails to pass a bill, we'll be back to square one in the new year, with the Senate needing to pass a new bill which will then have to be ratified by the House.
There will be few high-profile hardware launches at the congress (despite the 67, 000-crowd of visitors milling over the 240, 000 square meters of the new site).