The CoA has barred Choudhary from attending the ICC meeting but he participated in the policy-decision voting on the invitation of Shashank Manohar-led global body.
The ICC Board gave its consent to an extra global tournament (six-nation 50-over format) apart from two T20 World Cups and two 50-over World Cup in the next eight-year cycle.
However, the proposal to have an ODI World Cup after every three years, was rejected by the members.
"The COA doesn't recognise the participation of Amitabh Choudhary as a representative of the BCCI to the ICC. Accordingly, no decisions or commitments (if any) undertaken by him, on behalf of BCCI, will be binding on the BCCI," the CoA, which will demit office on October 23, wrote in a strongly-worded mail to ICC Chief Executive Manu Sawhney.
"Likewise, any decision that the ICC may claim to have taken during the meeting will neither bind the BCCI nor will it recognise the same," CoA said in the mail.
In a pointed rebuttal to Sawhney, who on October 14 had written to CoA that ICC's legal cell had vetted Choudhary's participation in the board meeting, the Vinod-Rai led Committee said they have no right to interfere in BCCI's internal matters.
"ICC cannot claim or otherwise have any say or role whatsoever in the rights of BCCI to duly nominate its representative. Please note that ICC's action amounts to an illegal and uncalled for intrusion in the internal affairs of a member nation," it further stated.