[#EstimationError]
= EstimationError
:mrdocs:

Build a fee rate estimation error result: a zero‐value estimation identifying the estimator and target, alongside the error message.

== Synopsis

Declared in `<util/fees.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:util/Unexpected.adoc[util::Unexpected<FeeRateEstimationError>]
EstimationError(
    xref:FeeRateEstimatorType.adoc[FeeRateEstimatorType] estimator,
    int returned_target,
    std::string error);
----

== Return Value

An unexpected result wrapping the estimator, target, and error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *estimator*
| The estimator that produced the error.
| *returned_target*
| The confirmation target associated with the failed estimate.
| *error*
| The error message describing the failure.
|===


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