[#JSONRPCRequest-id]
= xref:JSONRPCRequest.adoc[JSONRPCRequest]::id
:relfileprefix: ../
:mrdocs:

The request id echoed back in the reply&period;

== Synopsis

Declared in `&lt;rpc&sol;request&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional&lt;UniValue&gt; id = UniValue&colon;&colon;VNULL;
----


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