SAP ABAP Program RHRFRE00 (Available/Reserved Resources) is using

• Table/Structure Field (83)
• Function Module (9)
• Message Class (1)
• Message Number (5)
• Program (6)
• Table (20)

#	Object Type	Object Name	Object Description	Note
1	Table	HROBJECT	Object
2	Table	HRRESTYTAB	Resource type-resources table
3	Table	HRSOBID	Extended Object
4	Table	HRVPV	Training & Event Management: Fields in Standard Functions
5	Table	HRVSCHED	Schedule table with public holiday indicator
6	Table	OBJEC	Work Area for Database PCH
7	Table	P1027	Infotype 1027: Additional Business Event Info
8	Table	PCHDY	Selection Parameters for Database PCH
9	Table	PLOG	Planning and Organization File
10	Table	PLOGI	Table Index HRP*
11	Table	PP0J	Parameter string for program class PP0J
12	Table	SCAL	Structure for factory calendar function modules
13	Table	SCREEN	Structure Description for the System Data Object SCREEN
14	Table	SSCRFIELDS	Fields on selection screens
15	Table	T777S	Planning Status
16	Table	T77EO	External Object Types
17	Table	T77MT	Cross-Module Texts
18	Table	T77S0	System Table
19	Table	TEXTPOOL	ABAP/4 text pool definition
20	Table	WPLOG	PD Infotype Work Area