Reporting "Asre Bazar", Eng Hamoud al-Saadi said issues related to money transfers to Iran are still in place, Muscat Daily reported on Sunday.
He made the remarks during a recent visit to the Iranian central province of Isfahan as part of a group of 20 officials and businessmen from OCCI.
Al-Saadi stressed that enhanced shipping lines between Tehran and Muscat can boost the two countries’ trade ties.
During the trip, the delegation visited steel, ceramics and automotive factories. They also visited an Iranian investment center and the Isfahan Chamber of Commerce, Industries, Mines and Agriculture.
While the Joint Comprehensive Plan of Action (JCPOA) - a lasting nuclear deal between Tehran and world powers- came into force in January, some Iranian officials have complained about the US failure to fully implement the accord.
Back in March, Leader of the Islamic Revolution Ayatollah Seyed Ali Khamenei said Americans have yet to fulfill what they were supposed to do as per the nuclear deal.
Iran still has problems in its banking transactions or in restoring its frozen assets, because Western countries and those involved in such processes are afraid of Americans, the Leader said at the time, criticizing the US for its moves to prevent Iran from taking advantage of the sanctions removal.