Subscription-Based Billing With SAP BRIM: Are You Ready for the Subscription Economy?

The subscription economy is no longer just Netflix or Spotify — it's now on the agenda of every industry, from manufacturing and logistics to healthcare and education. According to Gartner, by 2025 more than 80% of enterprise software revenue is generated through subscription models. So how do businesses running SAP adapt to this shift?

The Limits of Traditional SAP SD

SAP SD (Sales and Distribution) is designed for one-off sales and delivery processes. Subscription management, however, requires:

• Recurring billing cycles
• Usage-based dynamic pricing
• Automatic renewal and cancellation flows
• Upgrade/downgrade and proration calculations
• Trial periods and promotion management

None of these capabilities are part of SD's standard scope. BRIM was built precisely to fill this gap.

The BRIM Subscription Flow

1. Order Creation (SOM)

When a customer starts a subscription, the order is created through Subscription Order Management. The product, tariff plan, start date and contract terms are defined.

2. Charging (Convergent Charging)

For as long as the subscription is active, Convergent Charging rates usage at defined intervals. Hybrid models such as fixed monthly fee + usage-based charges are supported. With tiered pricing, the unit price can drop automatically once a usage threshold is exceeded.

3. Invoicing (Convergent Invoicing)

Charging items flow into CI as billable items, and a consolidated invoice is generated according to the invoicing cycle. Different subscriptions of the same customer can be combined into a single invoice.

4. Accounting and Collection (FI-CA)

Invoices are posted in FI-CA, payments are matched automatically, and dunning kicks in for overdue receivables.

Proration: Mid-Period Changes

One of the most complex subjects in subscription management is proration. If a customer makes a change mid-period:

• Upgrade: The difference is calculated based on remaining days
• Downgrade: Takes effect from the next period, or a credit memo is issued
• Cancellation: Refund of unused days, or a contract penalty is applied

BRIM manages all these scenarios through configuration.

Real-World Scenario

Imagine a telecom operator: the customer has a 50 GB internet package, an IPTV subscription and an additional line. Mid-month, they upgrade to 100 GB. BRIM handles this scenario by:

1. Calculating the 50 GB package fee from the start of the period to the upgrade date
2. Calculating the 100 GB package fee from the upgrade date to the end of the period
3. Adding the IPTV and additional line fixed fees
4. Consolidating all items into a single invoice
5. Posting them in FI-CA

This entire complex process happens automatically and without errors.

At VEX-I we provide end-to-end consulting on BRIM projects, from Subscription Order Management to FI-CA collection. Get in touch for a BRIM solution tailored to your business model.