If Approver has approved a request by mistake or has changed their mind, it is possible to revoke their decision in ApprovalMax if it was not a final approval.
To revoke your decision, open a request and click on REVOKE:
Optionally, in the pop-up window you can specify a reason:
When ready, confirm you want to revoke your decision by clicking on REVOKE again.
As a result, your decision will be revoked: