SAP ABAP Program RN2COM_DOCHIST (Transfer History) is using

• Class (1)
• Data Element (2)
• Table/Structure Field (8)
• Interface (1)
• Message Class (1)
• Message Number (1)
• Class Method (2)
• Search Help (3)
• Table (5)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_ISHMED_DOC_COMM_CONSTANTS	Constants for Communication