You can integrate self-defined functions in the transformation library of the formula builder. In doing so, you can also make special functions available for frequent use that are not contained in the transformation library. The Business Add-In RSAR_CONNECTOR is available for this. For more information about using Business Add-Ins (BAdIs), read the detailed documentation for Business Add-Ins.

1. To implement a BAdI, proceed as described here: Implementing a Business Add-In. In the following, the specific special features for the implementation of the BAdI RSAR_CONNECTOR are described.
2. Call up transaction SE19. Enter RSAR_CONNECTOR as the Add-In name for which you want to create the implementation.
3. By double-clicking on the method (GET), you arrive in the class builder. Here you can enter your coding for the enhancement implementation. The following example shows the structure of such an implementation:

Coding Lines	Description
method IF_EX_RSAR_CONNECTOR~GET .
data: l_function type SFBEOPRND.	Structure with the description of the function
case i_key.	Importing parameter: Key with the function category
when 'CUSTOM'.	The BAdI implementation is always accessed with the ‘CUSTOM’ key.
* Beschreibung der Funktion C_TECH_NAME1
clear l_function.
l_function-tech_name = 'C_TECH_NAME1'.	Appears later in the Technical Name column and must be unique.
l_function-descriptn = 'Beschreibung 1'.	Appears later in the Description column.
l_function-class = 'CL_CUSTOM_FUNCTIONS'.	Name of the class in which the function is implemented.
l_function-method = 'CUSTOMER_FUNCTION1'.	Name of the method in which the function is implemented.
APPEND l_function TO c_operands.	Changing parameter: Table with descriptions of the function
* ... weitere Beschreibungen
endcase.
endmethod.



A function does not have a type. For this reason, the TYPE field of structure SFBEOPRND must not be filled.

4. Save and activate your implementation.