how to verify passed data thorough webservice

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Hi all,
I,ve got a dataset which is passing a portion of data thorough webservice.
As a parameter I assumed a highest ID of rows passed to the webservice
consumer.
On the client side, client writes the data and With the next calling of a
method only new rows are returned to a consumer (ID>parameter)
What I'm aware of is how to verify that the dataset has been sent
successfully, before sending nex part of data.

Perhaps, there is other way of such a scenario, please point me to the best
practise.

Thank you


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