Level 2 problems with posting cart to Google

Alex,

You got it right that the merchant-private-item-data and
merchant-private-data elements can be used to specify any
options or
data that you need about an order.

Since posting a 56KB size cart here would be overwhelming,
please
contact us via our Help Center (
http://checkout.google.com/support/sell/bin/request.py
) so we can take
a better look at the problem.

Thanks,
Jacob