What are the most used tables in SAP?

Table   Description                            Functional Area

• MARA   General Material Data         Logistics – Material Master
• VBAK Sales Document: Header Data        SD – Sales
• EKPO Purchasing Document Item  MM – Purchasing
• VBAP Sales Document: Item Data  SD – Sales
• MARC Plant Data for Material       Logistics – Material Master
• EKKO Purchasing Document Header         MM – Purchasing
• MSEG Document Segment: Material         MM – Inventory Management
• BKPF Accounting Document Header        FI – Financial Accounting
• KNA1 General Data in Customer Master   Logistics – Customer Master
• LFA1 Vendor Master (General Section)    FI – Financial Accounting
• VBRK Billing Document: Header Data      SD – Billing
• MAKT Material Descriptions          Logistics – Material Master
• SFLIGHT Flight        Basis – ABAP Workbench, Java IDE and Infrastructure
• VBRP Billing Document: Item Data         SD – Billing
• SPFLI Flight schedule         Basis – ABAP Workbench, Java IDE and Infrastructure
• MKPF Header: Material Document MM – Inventory Management
• LIPS SD document: Delivery: Item data  Logistics Execution – Shipping
• TADIR Directory of Repository Objects      Basis – Transport Organizer
• MARD Storage Location Data for Material Logistics – Material Master
• LIKP SD Document: Delivery Header Data         Logistics Execution – Shipping
• T001 Company Codes        FI – Financial Accounting
• CDHDR Change document header Basis – Change Documents
• BSID Accounting: Secondary Index for Customers         FI – Financial Accounting
• TSTC SAP Transaction Codes        Basis – ABAP Runtime Environment
• EBAN Purchase Requisition MM – Purchasing