Hello
If I initate ACCT, it's possible cancel it? (I try test with 1000 qora)
In which exact step of the process you would like to cancel it?
By initiating an ACCT, your funds are locked to this ACCT till the expiration or till the ACCT receive the key.
So, one way to cancel it is to not proceed furthermore with this (after the initiation) and wait for the ACCT to expire. The key will not be revealed to nobody and the funds will be returned back to the initiator.