> ## 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.

# Using multiple Document Definitions

> Use multiple Document Definitions in one ABBYY FlexiCapture for Invoices project to process different invoice types via a classifier or batch types.

You can use several Document Definitions to process invoices in a FlexiCapture for Invoices project. This is useful when you need to process several different types of invoices with different amounts and locations of fields within one project.

## Create another Document Definition

To get a new Document Definition, open the **Document Definitions** dialog box, select the existing Invoice Document Definition, and click the **Duplicate** button.

## Process invoices with multiple Document Definitions

Several Document Definitions can be used to process invoices in a single batch type. To do this, use a classifier in which different definitions correspond to different classes. If you do not have such a classifier in your project, split the Document Definitions by batch type. In that case, every batch type must have only one Document Definition for processing invoices. For more information, see [Batch types](/flexi-capture/project-settings/batch-types-project-settings).