ReadonlyaccountThe per-account block handle, or undefined when the request carries no
account id.
ReadonlyaccountThe account group, or undefined. Also serves as the market-data
accountInfo.
ReadonlyisWhether ordinary rejects are non-enforcing for this operation.
Registers a start-stage mutation owned by the current drop-copy operation.
Throws InternalError when a panic has poisoned the module,
LifecycleError outside an active drop-copy callback, or TypeError
when mutation is not a valid commit/rollback pair.
Pre-trade policy context: optional block handle and optional account group.
accountControlis present only when the request carries an account id;accountGroupis present only when that account is registered to a group.