# Entities

> Below is an overview of the different types of entities that are defined in the **SAP Connector for Purchase-to-Pay Discovery Accelerator**.

## Introduction

Below is an overview of the different types of entities that are defined in the **SAP Connector for Purchase-to-Pay Discovery Accelerator**.

### Process entities

The following entities in the Purchase-to-Pay process are defined in the SAP Connector for **Purchase-to-Pay Discovery Accelerator**:

* Purchase requisition
* Purchase order
* Purchase order item
* Goods receipt
* Purchasing document account assignment
* Purchasing order schedule lines
* Invoice
* Invoice item
* Accounting document
* Payment

### Supporting tables

The following Supporting tables are used to add business logic to the **SAP Connector for Purchase-to-Pay Discovery Accelerator**:

* Purchase requisition preprocessing
* Purchase order item preprocessing

### Master data entities

Master data entities contain static information such as names and descriptions to provide additional information on the process entities. The following master data entities are defined in the **SAP Connector for Purchase-to-Pay Discovery Accelerator**:

#### User
* User name
* User address
* User type

#### Supplier
* Supplier

#### Customer
* Customer

#### Material
* Material
* Material group
* Storage location

#### Organizational structure
* Company
* Plant
* Purchasing organization
* Purchasing group

#### Purchasing document
* Purchasing document type

#### Block/cancellation reason
* Payment block reason

#### Currency
* Currency exchange rate
* Currency conversion factor
* Currency decimal places

### Change log

Change logs describe changes that happen on the process entities.