New Zealand sheep and beef meat is still held up at the Chinese border and officials say the documentation required to get the ball rolling only arrived in China today.
On Monday last week MPI were told to stop issuing export certifications for meat going to China.
Primary Industries Minister Nathan Guy was alerted by text message the next day, but not told about the scale of the problem.
Chinese customs officials refused to clear deliveries of New Zealand meat because of confusion over a name change of the ministry in charge.
Export certificates for companies sending meat to China were changed on March 1 this year after the former Ministry of Agriculture and Forestry (MAF) became the Ministry for Primary Industries (MPI).