> For the complete documentation index, see [llms.txt](https://sdk.venly.io/sdk-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/function-references/wallet/signatures/signsignaturebyid/signsignaturebyid_2.md).

# SignSignature (ById)

Executes a confirmed signature request by performing the cryptographic signing operation. It returns the completed signature in the appropriate format.

**Prerequisites:**

* Signature request must be in **READY** status (use confirm endpoint first)

{% code overflow="wrap" %}

```cpp
void SignSignatureById_SubmittedAndSignedTransactionSignature(FString Id, const FVyUserAuth& SigningMethod, const FVySignSignatureById_SubmittedAndSignedTransactionSignatureRequest& Params, const FVyOnSignSignatureById_SubmittedAndSignedTransactionSignatureComplete& OnComplete) const;
```

{% endcode %}

\
**Parameters**

| Id            | FString                                                                                                                                                                                         | UUID of the signature request to execute                                                            |
| ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
| SigningMethod | FVyUserAuth                                                                                                                                                                                     | The Id and Value of one of the user's registered signing-methods                                    |
| Params        | [FVySignSignatureById\_SubmittedAndSignedTransactionSignatureRequest](/sdk-reference/ue5-sdk-v3/object-references/wallet/fvysignsignaturebyid_submittedandsignedtransactionsignaturerequest.md) | Parameters for this operation (FVySignSignatureById\_SubmittedAndSignedTransactionSignatureRequest) |
| OnComplete    | FVyOnSignSignatureById\_SubmittedAndSignedTransactionSignatureComplete                                                                                                                          | The callback function called when the user preferences retrieval operation is complete.             |

\
**OnComplete Callback** (FVyOnSignSignatureById\_SubmittedAndSignedTransactionSignatureComplete)\
Contains a [FVySubmittedAndSignedTransactionSignatureDto](/sdk-reference/ue5-sdk-v3/object-references/wallet/fvysubmittedandsignedtransactionsignaturedto.md) response type