OrderAccountMissing

The approval owner has no live System account. Fund the owner with the normal existential balance before approving an order; no registration or extra deposit is required.

Declared by the LimitOrders pallet; it classifies to the semantic code not_found.

Declared at pallets/limit-orders/src/lib.rs#L554.

Remediation

The referenced object is not on-chain; check the identifier

The same explanation is available in the terminal: btcli explain OrderAccountMissing.