Business Rule Framework Plus (BRF+) in SAP
Before understanding Business Rule Framework plus or BRF+, we’ll first discuss BRMS that stands for the ‘Business Rule Management System’. What exactly BRMS is and why we need it?

Business Rule Management System (BRMS)
• Every organization has its own rules & regulations, policies or some sort of guidelines that instructs the employees or other business partners regarding the things they should and shouldn’t do.
• Rules & regulations of an organization can be protected in many ways like; it can be found in written form, business application codes or even in the minds of business experts.

What are the advantages of using BRMS?

There are four main advantages of using BRMS that are mentioned below.
1. The first advantage of using BRMS is that the separation of business rules & codes helps in forming the application that copes up with the policy changes in a very responsive manner.
2. The modeling of business logic’s complexity makes imperative business decisions automatically.
3. The central management of business rules sanctions the organization by offering them the application with the consistency of corporate policy & government regulations.
4. The accessibility for business users has increased the visibility of the business rules & contributes to accountability.

Building blocks of BRF+
• Business Rule Framework plus is a very user-friendly & an object-oriented tool. It comprises the number of components that have a different role to play and is designed accordingly.
• The business rule is a collection of instantiated & combine those objects together and there are different types of objects with different sub-types of it.

APPLICATION
• Application is the first building block of BRF that acts as an object container. It is a very necessary building block to start the composing business rules in order to place an object in it.
• Objects that are used in the same business applications must be placed in the same application object.

FUNCTION
• The function is an alliance between the BRF+ plus and the ‘Outside’ and function frequently receives some input & produces an output.
• There is zero relation of function to the function of ABAP’s module concept. The manipulation of input is similar to ‘Black Box’ and the visibility of business logic is not shown on the function object itself.
EXPRESSIONS
• Expression behaves like a messenger of the logic where there are different kinds of sub-types of expressions.
• Some of the most common expressions are formula, decision tree & decision table and the lion share of a business rule’s logic is found on the object of the expression.

*Data objects and Rules & Set of rules are other two supporters of BRF+.

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