> ## 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.

# Business Cards API Compatibility with Version 10

> Business Cards API compatibility changes between ABBYY FineReader Engine 12 and 10 — objects, properties, methods, and constants that changed or were removed.

This section describes all changes to business cards API which may require changes in the source code of your applications.

| Object/Enumeration                                                                                | Property/Method/Constant | What has happened? | Comment                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| ------------------------------------------------------------------------------------------------- | ------------------------ | ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [FRPage](/fine-reader/engine/api-reference/document-related-objects/frpage)                       | ProcessBusinessCards     | Removed            | <Note> This method is no longer necessary in Linux and Windows because business cards can now be processed in parallel. </Note> To recognize business cards on a page, you should set the [SynthesizeBusinessCards](/fine-reader/engine/api-reference/parameter-objects/preprocessing-analysis-recognition-and-synthesis-parameters/synthesisparamsforpage#synthesizebusinesscards) property of the SynthesisParamsForPage object to TRUE and call any of the processing methods of the FRPage object.            |
| [FRDocument](/fine-reader/engine/api-reference/document-related-objects/frdocument)               | ProcessBusinessCards     | Removed            | <Note> This method is no longer necessary in Linux and Windows because business cards can now be processed in parallel. </Note> To recognize business cards is a document, you should set the [SynthesizeBusinessCards](/fine-reader/engine/api-reference/parameter-objects/preprocessing-analysis-recognition-and-synthesis-parameters/synthesisparamsforpage#synthesizebusinesscards) property of the SynthesisParamsForPage object to TRUE and call any of the processing methods of the FRDocument object.    |
| BusinessCardProcessingParams                                                                      |                          | Removed            | To enable detection of multiple business cards on one page, set the [SplitType](/fine-reader/engine/api-reference/parameter-objects/preprocessing-analysis-recognition-and-synthesis-parameters/pagepreprocessingparams) property of the PagePreprocessingParams object to PST\\\_BusinessCardSplit.                                                                                                                                                                                                              |
| BusinessCardsCollection                                                                           |                          | Renamed            | The new name of the object is [BusinessCards](/fine-reader/engine/api-reference/document-related-objects/businesscards). New naming convention is that the [temporary collections](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-collections#temporary_collections) have Collection postfix in their name, while this is a [read-only collection](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-collections#read-only_collections). |
| [BusinessCardField](/fine-reader/engine/api-reference/document-related-objects/businesscardfield) | FindComponentByType      | Removed            | Use the [FindComponent](/fine-reader/engine/api-reference/document-related-objects/businesscardfield/findcomponent-method) method instead.                                                                                                                                                                                                                                                                                                                                                                        |