Procedures have been tightened at the South African Bank Note Company (SABN) and the suspended managing director is involved in a disciplinary process, South African Reserve Bank (SARB) governor Gill Marcus said on Wednesday.

"An acting MD is in place, who has tightened procedures and implemented the necessary checks and balances to ensure that the company provides the consistent levels of superior service expected of it," she told the SARB's ordinary general meeting in Pretoria.

The SABN is a subsidiary of the SARB.

Musa Mbhele was suspended in August.

"... the SABN was subjected to a rigorous review of all procedures and controls following my assumption of office as governor of the Bank at the end of last year," Marcus said.

She said the MD was suspended after the "uncovering of weaknesses" at the SABN. Senior deputy governor Xolile Guma had taken on the duties of the chairperson of SABN.

The Sunday Independent reported that Mbhele had allegedly been charged with failing to comply with quality standards in connection with the printing of Zambian kwacha and Namibian dollar notes.

Marcus said the SARB had "complete confidence in the integrity of South Africa's bank notes".

"South Africa's bank notes incorporate a range of the latest cutting edge security features which ensure that they meet the highest international security standards."

She encouraged people to "know their money".

"Anyone who is ever in doubt about a banknote should check at least three of the... security features, which can be found on our website."