Funds may be held only in these cases: (a) if the sending wallet has been exposed to questionable activity, an alert may be raised and the transaction may not be approved, depending on the severity of the exposure; (b) in the rare event of a blockchain issue, the Shiga team will intervene manually; (c) if an unsupported asset is sent, a refund may be issued on a best-effort basis.
Can my funds get stuck on Portal Out?
What can cause funds to be held during Portal Out.