[#wallet-CAddressBookData-purpose]
= xref:wallet.adoc[wallet]::xref:wallet/CAddressBookData.adoc[CAddressBookData]::purpose
:relfileprefix: ../../
:mrdocs:

Address purpose which was originally recorded for payment protocol support but now serves as a cached IsMine value. Wallet code should not rely on this field being set.

== Synopsis

Declared in `<wallet/wallet.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<AddressPurpose> purpose;
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