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

# StartTransaction action

> The StartTransaction action creates a transaction to process documents with an ABBYY Vantage skill in the Blue Prism connector, and returns the transaction identifier.

The **StartTransaction** action creates a transaction to process a document with an ABBYY Vantage skill.

## Action parameters

| Parameter                             | Direction | Data type    | Description                                                                                                        |
| ------------------------------------- | --------- | ------------ | ------------------------------------------------------------------------------------------------------------------ |
| **skill**                             | In        | `Text`       | ABBYY Vantage skill name or skill identifier.                                                                      |
| **transactionRegistrationParameters** | In        | `Collection` | Optional. Collection of registration parameters for the new transaction.                                           |
| **inputFiles**                        | In        | `Collection` | Collection of input files for the new transaction. To add a single file, populate the collection with one element. |
| **transactionId**                     | Out       | `Text`       | Transaction identifier.                                                                                            |

The **transactionRegistrationParameters** collection contains the following fields:

| Field     | Data type | Description                   |
| --------- | --------- | ----------------------------- |
| **Key**   | `Text`    | Registration parameter key.   |
| **Value** | `Text`    | Registration parameter value. |

The **inputFiles** collection contains the following fields:

| Field                          | Data type    | Description                                                     |
| ------------------------------ | ------------ | --------------------------------------------------------------- |
| **FilePath**                   | `Text`       | Path to the input file. Make sure this field has no empty rows. |
| **Index**                      | `Number`     | Optional. Transaction input file order index.                   |
| **FileRegistrationParameters** | `Collection` | Optional. File registration parameter collection.               |

The **FileRegistrationParameters** collection contains the following fields:

| Field     | Data type | Description                        |
| --------- | --------- | ---------------------------------- |
| **Key**   | `Text`    | File registration parameter key.   |
| **Value** | `Text`    | File registration parameter value. |

## Prepare a collection for input files and registration parameters

Before you pass data to the **inputFiles** and **transactionRegistrationParameters** parameters, set up each collection so that its structure is valid.

<Steps>
  <Step title="Open the process">
    Open the process in Blue Prism Process Studio.
  </Step>

  <Step title="Add a collection">
    Add a collection to the layout.
  </Step>

  <Step title="Open Collection Properties">
    Open **Collection Properties**.
  </Step>

  <Step title="Import the collection fields">
    Import the collection fields for the **inputFiles** parameter of the **StartTransaction** action:

    1. Click **Import**.
    2. Select **Business Object: ABBYY Vantage Skills**.
    3. Select **Action: StartTransaction**.
    4. Select **Parameter: inputFiles (input)**.
    5. Click **OK**. You can now specify this collection in the **inputFiles** input parameter of the **StartTransaction** action.

    <Frame>
      <img src="https://mintcdn.com/abbyy/fsp_01hRYkHg4Ey_/images/vantage/developer/connectors/blue-prism/fields-import-input-files.png?fit=max&auto=format&n=fsp_01hRYkHg4Ey_&q=85&s=84fcb1576e8329459a227e14e682434a" alt="Fields Import window with the inputFiles (input) parameter selected for the StartTransaction action" width="799" height="628" data-path="images/vantage/developer/connectors/blue-prism/fields-import-input-files.png" />
    </Frame>
  </Step>
</Steps>

<Note>
  Populate the collection before you call the **StartTransaction** action.
</Note>

To create a **transactionRegistrationParameters** collection, repeat these steps but select the **transactionRegistrationParameters (input)** parameter when you import the collection fields. You can also use the **transactionRegistrationParameters (input)** parameter to create a **FileRegistrationParameters** collection.

## Related topics

* [GetSkills action](/vantage/connectors/blue-prism/actions/get-skills)
* [GetTransactionResult action](/vantage/connectors/blue-prism/actions/get-transaction-result)
* [SaveTransactionResult action](/vantage/connectors/blue-prism/actions/save-transaction-result)