Readonly_Readonly~effect/Optional Readonly~effect/Attach extra key/value metadata to this error.
Optional Readonly~effect/Suppress reports for this error.
Optional Readonly~effect/Override the severity level for this error.
Optional Readonly~effect/Optional Readonly~effect/OptionalcauseOptionalstack
The Direct inbox sequence number (
seq_id) the participant lookup sends, but the session holds none — no inbox answer has taught it yet. Server-issued data missing, so typed (likeFbidV2UnknownError), never an invented number; the next inbox answer repairs it.