# PingOnceRequestBase - `targetId` (`string`, required): Target resource ID (UUID) - `targetTypeHint` (`PingTargetType | null`, optional): Optional hint for the target resource type - `payloadType` (`PingPayloadType | null`, optional): Desired payload type (defaults to provider-specific value) - `payload` (`string | null`, optional): Explicit UTF-8 payload to send with the probe (mutually exclusive with payloadSizeBytes) - `payloadSizeBytes` (`number | null`, optional): Synthetic payload size in bytes (mutually exclusive with payload) - `timeoutMs` (`number | null`, optional): Per-probe timeout in milliseconds (0 uses server default) [TypeScript](../../typescript.md) Related types — open only those used by your request: - [PingPayloadType](PingPayloadType.md) - [PingTargetType](PingTargetType.md)