The transaction for editing transformation rules and update rules offers a transformation library. You can use this when working with the formula builder.
When working with VirtualProviders, do not use formulas, as no inversion is possible for this. Use routines in this case.
Using the transformation library together with the formula builder enables you to create formulas without the need for ABAP coding.
The transformation library has over 70 pre-defined functions, in the following categories:
Functions for Character Strings
Date Functions
Basic Functions
Mathematical Functions
Suitable Functions
Other Functions
n the dialog box for selecting an update method, you can call the to get a list of possible functions with a description of their syntax.
You can also implement self-defined functions in the transformation library in the formula builder. You can integrate existing function modules in these self-defined functions. You can thus make functions that are not currently contained in the transformation library available for frequent use. More information: BAdI: Customer-Defined Functions in the Formula Builder.
The formula builder has two modes: Standard and expert mode. In standard mode, you can only enter formulas using the pushbuttons and by double-clicking on functions and fields. In expert mode, you can enter formulas directly. You can also toggle between the two modes when entering a formula.
For more detailed information about the formula builder, press in the formula builder.
You can find a step-by-step guide using an example under Example for Using the Formula Builder.