SAP ABAP TYPE ISU21 (ISU21) is using

• Data Element (15)
• Table/Structure Field (88)
• Table (61)

#	Object Type	Object Name	Object Description	Note
1	Table	ARC_PARAMS	Structure of Transfer from Archiving Parameters
2	Table	BOOLE	Boolean variable
3	Table	BUS0BK	BP: Bank details (Read)
4	Table	DBERDR	DB Table: Discount Lines - Print Document
5	Table	DBERDZ	DB Table: Individ. Lines - Print Document
6	Table	DFKKBOL	Bollo: Italy
7	Table	DFKKRD	FI-CA: Table for Management of Rounding Amounts
8	Table	DFKKSUM	Posting totals from FI-CA
9	Table	DFKKSUMC	Control details for posting totals
10	Table	E21_CHANGE_SERVICE_OBJ	Change Service Object
11	Table	EABP	BB Plan
12	Table	EABPS	Sub-BB Plan
13	Table	EINV01	Invoicing Start Parameters
14	Table	EITEDI	Temporary Index Selection in Invoicing -> EDI Transmission
15	Table	EITERDK	Temporary Data Selection: Invoicing -> Bill Printout
16	Table	EITR	Temporary Selection Data for IS-U Invoicing
17	Table	EITRGR	Transfer Structure for Grouping EITR in Event R403
18	Table	EKUN_EXT	CBP: General Data (Read Transfer Structure)
19	Table	EOSB	IS-U On-Site Billing
20	Table	EPRINTPARAMS	Print Option of Print Workbench
21	Table	ERCH	Billing Doc. Data
22	Table	ERCHZ	Individual Line Items: Internal
23	Table	ERDB	Documents for Print Document (ERDK)
24	Table	ERDK	Print Document/Header Data
25	Table	ERDO	Outsorting Table for Invoicing
26	Table	ERDTAX	Tax Indicator Information for a Print Document
27	Table	EVER	IS-U Cont.
28	Table	FKKCL	Clearing Items for Document in Contract A/R + A/P
29	Table	FKKDR_OBJECT	Object for Deferred Revenue Postings
30	Table	FKKIA	FI-CA: Structure for inter. suppl. to state interest
31	Table	FKKIH	FI-CA: Interest history - interest calc. period on an item
32	Table	FKKKO	Header Data In Open Item Accounting Document
33	Table	FKKMAKO	Dunning History Header
34	Table	FKKMAZE	Dunning history of line items
35	Table	FKKOP	Business Partner Items in Contract Account Document
36	Table	FKKOPK	G/L Account Items in Open Item Account Document
37	Table	FKKOPL	Locks for Open Items (Posting Interface)
38	Table	FKKOPW	Items in contract account document
39	Table	FKKOP_R402	Open Item Structure for New Items of Event R402
40	Table	FKKQS	Withholding Tax Data
41	Table	FKKVK	Contract Account Header
42	Table	FKKVKP	Contract Account Partner-Specific
43	Table	FKKWH_WHGRP	Object Data for Function Group FKW2
44	Table	FKK_SEC	Security Deposit
45	Table	FKK_SEC_REQ	Request Documents for Security Deposits
46	Table	ISU21BILL_DOC_2_CROSS_REF_NO	Link from a billing document to the IDE cross ref. number
47	Table	ISU21LIN	Transfer structure for creation of business partner item
48	Table	ISU21MWSKZ	Transfer structure: Tax information for billing lines
49	Table	ISU21_PRINT_DOC	Print Document
50	Table	ISUACCADDRDATA	Structure: Address Data and Dispatch Control from Cont. Acct
51	Table	REGEN	General Fields for IS-U Function Module Interfaces
52	Table	RFKB4	Screen fields for function pool FKB4
53	Table	RSDYNSEL	Structure for function group SSEL
54	Table	SWOTOBJID	Structure for Object ID
55	Table	TE128	Manual Bill Outsorting for Invoicing
56	Table	TE305	Transactions for Company Code and Division
57	Table	TE328	Validations per Outsorting Check Group for Invoicing
58	Table	TE633	System Parameters for Budget Billing Plan
59	Table	TFK003	Document types
60	Table	TFK110	Clearing: Clearing Types
61	Table	TOA_DARA	SAP ArchiveLink structure of a DARA line