[#node-Warnings-Set]
= xref:node.adoc[node]::xref:node/Warnings.adoc[Warnings]::Set
:relfileprefix: ../../
:mrdocs:

Set a warning message. If a warning with the specified `id` is already active, false is returned and the new warning is ignored. If `id` does not yet exist, the warning is set, the UI is updated, and true is returned.

== Synopsis

Declared in `<node/warnings.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7f2e144313b8)]]
bool
Set(
    xref:node/Warnings.adoc[warning_type] id,
    xref:bilingual_str.adoc[bilingual_str] message);
----

== Return Value

true if the warning was indeed set (i.e. there is no active warning with this `id`), otherwise false.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *id* [in]
| Unique identifier of the warning.
| *message* [in]
| Warning message to be shown.
|===


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