[#BlockValidationState-Error]
= xref:BlockValidationState.adoc[BlockValidationState]::Error
:relfileprefix: ../
:mrdocs:

Puts the state into the run‐time error mode.

== Synopsis

Declared in `<consensus/validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
Error(std::string const& reject_reason);
----

== Return Value

Always false, so callers can return this directly.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *reject_reason*
| Reason recorded when the state was previously valid.
|===


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