> ## 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.

# FieldType (deprecated)

> Deprecated FieldType enumerator listing field data types (String, Decimal, and others) used in older Custom activity scripts.

<Info>
  This interface is deprecated. It provides access only to the first document of the transaction.
</Info>

The FieldType enumerator specifies the type of the extracted field.

The enumerator contains the following constants:

* String
* Decimal
* ISODate
* Boolean
* Image
* Concept. For more information, see the [Developer Guide](/vantage/developer/getting-started).
* Enum

## Related topics

* [FieldOcrType](/vantage/documentation/skill-designer/process/custom-activity/field-ocr-type)
* [Field](/vantage/documentation/skill-designer/process/custom-activity/field)
* [Object model](/vantage/documentation/skill-designer/process/custom-activity/object-model)