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> Unreal Engine API Reference > Plugins > ConcertSyncCore > FConcertDataStore_CompareExchangeRequest > ExpectedVersion

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ExpectedVersion

The expected version of the value.

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Syntax

[UPROPERTY](Programming/UnrealArchitecture/Reference/Properties)(VisibleAnywhere, Category="Concert Data Store Message")
uint32 ExpectedVersion

Remarks

The expected version of the value. If non-zero, the server uses this fields to identify the expected value and ignore the 'Expected' field. This is an optimization implemented in the client/server protocol. If the expected payload is large and correspond to the value currently cached in the client, the client will send the expected version rather than the expected value to save bandwidth. The server will compare version and if they match, will perform the exchange.

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