[#wallet-CWallet-FillPSBT]
= xref:wallet.adoc[wallet]::xref:wallet/CWallet.adoc[CWallet]::FillPSBT
:relfileprefix: ../../
:mrdocs:

Fills out a PSBT with information from the wallet. Fills in UTXOs if we have them. Tries to sign if options.sign=true. Sets `complete` if the PSBT is now complete (i.e. has all required signatures or signature‐parts, and is ready to finalize.)

== Synopsis

Declared in `<wallet/wallet.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<common::PSBTError>
FillPSBT(
    xref:PartiallySignedTransaction.adoc[PartiallySignedTransaction]& psbtx,
    xref:common/PSBTFillOptions.adoc[common::PSBTFillOptions] const& options,
    bool& complete,
    size_t* n_signed = nullptr) const;
----

== Return Value

an error if something goes wrong

== Parameters

[cols="1,4"]
|===
| Name| Description
| *psbtx* [in]
| PartiallySignedTransaction to fill in
| *options* [in]
| options for filling or signing
| *complete* [out]
| indicates whether the PSBT is now complete
| *n_signed* [out]
| the number of inputs signed by this wallet
|===


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