Creating Internal Types in Classes
Prerequisites
For up to date information about data types, classification, visibility, refer to the
data types section of the ABAP User’s Guide.You must not create public data types within global classes.
Procedure
Result
You have not created internal data types within your class. You can use these in your class, and, if they are defined as protected, also in its subclasses. You can define private and protected attributes and interface parameters using the TYPE addition.