1Malaysia Development Bhd (1MDB) is only a commercial issue that does not warrant for the opposition to call for a vote of no confidence against Prime Minister Najib Abdul Razak, an Umno leader argues.

"When you want to cast vote of no confidence against the prime minister, it must be a valid reason that affects the rakyat, the economy and national security," Deputy Agriculture and Agro-based Industry Minister Tajuddin Abdul Rahman said.