---
schema_version: "1"
id: 546c4d551687d5e9b678a5de518646ec870b9865697b63748752bf8233c11818
title: Object Interfaces
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/object_reference/object_interfaces_list.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/object_interfaces_list.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: ef1e31f604bbd90f397b32f8bbc89d14c29996f03e4dbd00db079251e935862a
description: This section provides a list of standard object interfaces and their standard fields.
---
# Object Interfaces

This section provides a list of standard object interfaces and their standard fields.

Some fields may not be listed for some object interfaces. To see the system fields for each object interface, see [System Fields](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/system_fields.htm "System fields are read-only fields found on most objects. These fields are automatically updated during API operations. For example, the ID field is automatically generated during a create operation and the LastModifiedDate is automatically updated when a user modifies a record.") .

To verify the complete list of fields for an object interface, you can use a describe call from the API.

- **[PriceAdjustmentGroup](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_interfaces_priceadjustmentgroup.htm)**  
    Defines the business logic for a top-level price adjustment, for example, a discount applied to an entire order. This object interface is available in API version 55.0 and later.
- **[PriceAdjustmentItem](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_interfaces_priceadjustmentitem.htm)**  
    Defines the business logic for an item-level price adjustment, for example, a discount on an order item. This object interface is available in API version 55.0 and later.
- **[SalesTransaction](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_interfaces_salestransaction.htm)**  
    Defines the business logic for a sales transaction, for example, an order or a cart. This object interface is available in API version 55.0 and later.