---
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title: EPC API Response Format
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content_type: documentation
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  - Industries Developer Documentation
---
# EPC API Response Format

The EPC REST API uses the DomainResponse class to represent the output for REST calls.

The API responses permit a structured interaction between the requesting entities and back-end operations and are composed of objects wrapped in a result epcResponse object. The wrapper object is represented by the following properties or elements:

- overallResult: Specifies the overall result of the API call.

- failureReason: If the API call fails, this element describes the reason for the failure.

- warningMessage: If the API call is successful but encounters errors, this field lists the errors.

- entities: Lists the objects specified in the API call

- supplimentaryEntity: Lists any additional objects or information related to the objects specified in the API call.

- hierarchy: If applicable, displays the children of objects specified by the API call.

- children: If the hierarchy is displayed, lists the children of the objects specified by the API call.

- pageInfo: Specifies various properties related to pagination such as:

  - currentPage: Specifies the current page.

  - pageSize: Specifies the number of items on the page.

  - totalCount: Specifies the total number of records.

  - totalPages: Specifies the total pages. The total number of pages is the totalCount divided by pageSize.

- numberOfProduct: Lists the number of products returned.