In SAP S/4HANA Subscription Order Management (SOM), Cross-Catalog Mapping is the central configuration that links a commercial product from the sales catalog to a technical product in the master catalog. This mapping explicitly defines which rate plan, and consequently which specific charge plan(s) within that rate plan, should be activated in the backend SAP Convergent Charging system when a customer orders the commercial product. This mapping acts as the direct trigger for activating the correct charging logic for a new subscription.

A. BRF+ function: While BRF+ can be used for complex rule-based determinations, the fundamental link between a sold product and its charge plan is defined in cross-catalog mapping, not a BRF+ function.

C. Product model: The product model defines the structure and attributes of a product, including its potential rate plans, but it does not contain the mapping logic that triggers a specific one upon sale.

D. Resource assignment: This is a fulfillment step concerned with linking technical resources (e.g., a phone number) to a subscription, which occurs after the charge plan has already been determined.

1. SAP Help Portal

SAP S/4HANA for Subscription Order Management

"Cross-Catalog Mapping": The official documentation describes Cross-Catalog Mapping as the mechanism to map products from different catalogs (e.g.

sales to technical). It specifies that this mapping determines the rate plans to be used for the subscription

which directly controls the charge plan activation. (See section on Product and Master Data Management).

2. SAP Help Portal

SAP S/4HANA for Subscription Order Management

"Product Modelling": This documentation details how products are structured. It clarifies that the model defines the components of a product

but the activation logic for a specific sales scenario is handled by the mapping

not the model itself.

3. SAP Learning Hub

Course SOM100 - "SAP S/4HANA for subscription order management": Unit 3

"Master Data in Subscription Order Management

" explicitly covers the concept of cross-catalog mapping. It details how a sales product is mapped to a subscription product

and this mapping includes the assignment of a rate plan from SAP Convergent Charging

which is the trigger for the charge plan.