[#transaction_identifier-2constructor-06]
= xref:transaction_identifier.adoc[transaction&lowbar;identifier]::transaction&lowbar;identifier
:relfileprefix: ../
:mrdocs:

Constructs a null transaction identifier&period;

== Synopsis

Declared in `&lt;primitives&sol;transaction&lowbar;identifier&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
transaction&lowbar;identifier();
----


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