> ## 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. # JSON Schema > The Vantage JSON Schema describes extracted document data structure: ExtractedDataTransaction, ExtractedDataDocument, DocumentDefinition, and child objects. The JSON Schema used can be downloaded here. An output JSON file will contain a number of different objects as displayed in this diagram The JSON Schema used can be downloaded [here](/vantage/documentation/skill-designer/process/custom-activity/public-schema-json). An output JSON file will contain a number of different objects as displayed in this diagram: JSON Schema Diagram **ExtractedDataTransaction** is the key object in the JSON output file. This object contains information about the transaction. | Property | Type | Description | | :- | :- | :- | | `Id` | `Guid` | The ID of the transaction. | | `SkillId` | `String` | The ID of the applied skill. | | `SkillName` | `String` | The name of the applied skill. | | `Documents` | [ExtractedDataDocument](/vantage/developer/output/json/extracted-data-document) `[]` | The list of the Documents objects, together with the processing results. | | `CreationTime` | `DateTimeOffset` | The time of the transaction. | | `SourceFiles` | `FileModel []` | The list of SourceFile objects, together with information about the source files submitted for processing. |