[#Chainstate-NeedsRedownload]
= xref:Chainstate.adoc[Chainstate]::NeedsRedownload
:relfileprefix: ../
:mrdocs:

Whether the chain state needs to be redownloaded due to lack of witness data.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, requires_capability(0x7f9513ab4f88), requires_capability(0x7f9502c97ff8), requires_capability(0x7f9525449d28), requires_capability(0x7f9517400008)]]
bool
NeedsRedownload() const;
----

== Return Value

true if the chain state needs to be redownloaded.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====

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