SAP ABAP Program RSCP0138 (Test Width of Texts) is using

• Class (4)
• Data Element (1)
• Table/Structure Field (14)
• Function Module (3)
• Class Method (4)
• Table (3)

#	Object Type	Object Name	Object Description	Note
1	Class	CL_ABAP_CHAR_UTILITIES	Utilities for Processing Characters
2	Class	CL_ABAP_CONV_IN_CE	Code Page and Endian Conversion (External -> System Format)
3	Class	CL_SCP_SEGMENT	Tree: Code Page<->Segment<->Character<->Code
4	Class	CX_SY_CONVERSION_CODEPAGE	System Exception Converting Character Set