SettlementStatusRequest(35=EC) is used to request for the settlement status of a trade.
Additional detail from the official source
Where possible a trade reference or identifier should be provided, and if it is not possible it is recommended that as much of the trade details are provided in the request as possible. The trade details provided are not intended to serve as filter criteria but look-up criteria.
Message structure 1350 distinct fields
Source order, including nested components and groups. Group counts precede the repeated entries. “Required here” is relative to the enclosing component or group, not unconditional in the message. A dash means not marked required; conditional requirements remain in the source notes. This is a reference, not a counterparty-specific validator.
Includes nested components and groups. Escape clears the filter.