Callbacks are not directly managed by the SQL Server transport and are not enabled by default. To enable them, follow the steps outlined in callbacks.
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Shape the future 
Samples Callback support
Component:
SQL Server Transport
SQL Server Transport
Target Version:
NServiceBus 7.x
NServiceBus 7.x
Standard support for version 7.x of NServiceBus has expired. For more information see our Support Policy.
Related Articles
- Client-side callbacks
Gradually transition applications from synchronous to a messaging architecture.