Taking actions are more important than making new promises for the Group of 20 (G20) to boost the ongoing but still fragile global economic recovery, said a senior Canadian official.

"I call Toronto summit as an accountability summit," Peter van Loan, minister in charge of international trade, told Xinhua during an interview on the eve of the fourth G20 Summit in Toronto.

"Action actually is more important than making new commitment."

Leaders from 20 major economies around the world are scheduled to meet here in Toronto for their fourth summit since this round of global financial and economic crises broke out in fall 2008.

Though they are expected to discuss key global economic issues, differences are destined to pop up and stick in their way, said the minister.

"There is a real challenge. G20 is a big body, (and) getting 20 different countries with different interests to agree on anything is a challenge," van Loan said.

The success will hinge on whether consensus could be reached on issues such as financial and banking reforms, resisting protectionism, managing stimulus and securing commitments to dealing with government debt and deficit, the minister added.

He said the evolving Greek debt crisis had reminded people that the world economy is not out of the woods yet.

"Global recovery still needs a lot of careful attention. Countries should focus on those priorities," he said.