
Enhancing Infotypes 

You can only enhance infotypes which can be maintained directly. For more information, see the Infotypes per Object Type view of the Organizational Management IMG Customizing activity Maintain Infotypes (this tells you whether each infotype can be maintained directly).
Another way of displaying all infotypes concerned is to display all the entries from the Infotype per Object Type table (T777I), for which the MAINT field is active (can not be maintained via standard transactions).
The following standard infotypes can not be enhanced.
Use
Use this function if you want to enhance a standard infotype by adding additional fields.
Procedure

To use the infotype copier, you must be able to program in ABAP/4, be familiar with the ABAP/4 Dictionary, the ABAP/4 Screen Painter and the ABAP/4 Menu Painter.
This brings you to Structure maintenance.
Result
You have enhanced your chosen infotype by adding fields created in the structure CI_Pnnnn. The following objects have been created: