In SAP S/4HANA Subscription Order Management (SOM), the Technical Resource represents the unique, identifiable instance of a service or object being subscribed to. Each subscription contract item that requires provisioning is linked to a specific technical resource. For example, in a telecommunications contract, the unique phone number or SIM card ID is the technical resource. This same unique resource cannot be assigned to another active subscription contract item simultaneously, making it the object that must be unique across all items in the system.

B. Contract account: A contract account is a billing-related object that can be assigned to multiple subscription contracts and their items for a single business partner.

C. Business partner: A business partner is the customer, who can have numerous subscription contracts, each with multiple items. It is not unique per item.

D. Product ID: The product ID represents the item from the sales catalog (e.g., "Premium Subscription Plan"). The same product is sold in countless different contract items.

1. SAP Help Portal

SAP S/4HANA 2020

"Technical Resources": "A technical resource is a uniquely identifiable object that is required to use a subscribed service. [...] You can create technical resources for each subscription contract item." This statement confirms that the technical resource is the unique object linked at the item level.

2. SAP Help Portal

SAP S/4HANA 2020

"Structure of a Subscription Contract": This document outlines the contract structure

showing that the Business Partner and Contract Account are at the header level

shared by all items within that contract

and therefore cannot be unique per item. The Product is at the item level but is not a unique instance.