---
title: "Exposed APIs of the Orchestration SDK: Local Transaction"
slug: "orch-sdk-ig-exposed-apis-local-transaction-5-12-0"
updated: 2025-10-24T12:26:58Z
published: 2025-10-28T12:20:27Z
canonical: "docs.onespan.com/orch-sdk-ig-exposed-apis-local-transaction-5-12-0"
excludeFromSearch: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Exposed APIs of the Orchestration SDK: Local Transaction

> New APIs are created for Swift users of the iOS SDK. For more information, refer to the Xcode API documentation on LocalTransactionParameters and LocalTransactionDelegate.

The Customer Mobile Application can initialize a local transaction process by calling the startLocalTransaction method of the Orchestrator object.

A LocalTransactionParams object must be provided as an input parameter of the startLocalTransaction method; this LocalTransactionParams object must be initiated with the following parameters:

- User identifier. A string which uniquely identifies the user on the OneSpan Trusted Identity platform.

- Cryptographic Application Index. The index of the cryptographic application which must be used to generate the signature.
- Data Fields. The transaction data to sign. A list of max. 8 data fields; the length of the data fields is limited to 16 characters.
- Protection Type. The authentication method which must be used to authenticate the user before signing the transaction (see [Authentication Methods](/mobile/docs/orch-sdk-ig-authentication-methods-5-12-0) for more information).

The LocalTransactionCallback interface is used by the Orchestration SDK to interact with the Customer Mobile Application during the local transaction process. It exposes the following methods:

- onLocalTransactionSuccess. Called upon local transaction success. It returns the generated signature and, depending on the Digipass configuration, a host code (used to authenticate the authentication server on which the signature has been submitted).
- onLocalTransactionAborted. Called when local transaction is cancelled.
- onLocalTransactionPasswordError. Called upon a local transaction process error due to incorrect user input. The possible errors are listed in the OrchestrationErrorCodes class.

For more information about this feature, see [Local Transaction](/mobile/docs/orch-sdk-ig-local-transaction-5-12-0).