Type1>'' must implement '' for interface?

It sounds like you're loading up a different version of the assembly that contains your interface in the web service and in the client, causing the client to reject the signature implemented by the web interface. Ensure that the versions are the same and, if necessary, strong-sign the assembly.

Your interface specifies that the "BatchTrackerObject" parameter be of type "BatchTracker" but your implementation uses type "BusinessObjects. BatchTracker". Try removing the "BusinessObjects." qualifier from your implementation.

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