SAP FICO for Finance Users: GL, AP, AR, Cost Centres and the Reports You Will Use

⏱ 3 min readUpdated 28 September 2026

If you have joined a company that runs SAP, finance work happens in FI (Financial Accounting) and CO (Controlling). This guide explains the building blocks and the daily transactions in plain English.

In this article
  1. FI vs CO
  2. The organisation structure
  3. Documents: everything is a document
  4. Accounts payable (vendors)
  5. Accounts receivable (customers)
  6. General ledger
  7. Controlling: where the cost belongs
  8. Month-end close, simplified

FI vs CO

FI — Financial Accounting CO — Controlling
External reporting: balance sheet, P&L, tax Internal reporting: costs by department, product, project
GL, vendors (AP), customers (AR), assets, banks Cost centres, internal orders, profit centres, product costing
Legal entity view (company code) Management view (controlling area)

The organisation structure

  • Company code — a legal entity with its own balance sheet (for example, your Indian company).
  • Chart of accounts — the list of GL accounts, shared by company codes.
  • Controlling area — groups company codes for internal reporting.
  • Fiscal year variant — for India usually April–March with 12 periods plus special periods for year-end adjustments.

Documents: everything is a document

Every posting creates a document with a number, a document type (SA = GL posting, KR = vendor invoice, DR = customer invoice, KZ = vendor payment…) and line items with posting keys (40 = debit GL, 50 = credit GL, 31 = credit vendor, 01 = debit customer). You rarely memorise keys — the transaction screens choose them — but they explain what you see in reports.

Accounts payable (vendors)

T-code Does
FB60 / MIRO Enter a vendor invoice (without / with purchase order)
F-53, F110 Manual payment / automatic payment run
FBL1N Vendor line items — open and cleared
FK03 Display vendor master

Accounts receivable (customers)

T-code Does
FB70 / VF01 Customer invoice (FI / from sales billing)
F-28 Incoming payment
FBL5N Customer line items and ageing

General ledger

T-code Does
FB50 / F-02 GL journal entry
FBL3N (or FAGLL03) GL line items
FS10N / FAGLB03 GL balances by period
FB03 Display any document
FB08 Reverse a document

Controlling: where the cost belongs

  • Cost centre — a department that spends (HR, IT, Plant maintenance). Expenses posted in FI carry a cost centre.
  • Internal order — a temporary collector for an event or project (a trade fair, a marketing campaign).
  • Profit centre — a business area measured on profit (a product line or region).

Useful reports: KSB1 (cost centre line items), S_ALR_87013611 (cost centres: actual vs plan), KOB1 (internal order line items).

Month-end close, simplified

  1. Post accruals and provisions (FB50, or recurring entries).
  2. Run depreciation (AFAB) for fixed assets.
  3. Foreign-currency revaluation of open items.
  4. Settle internal orders and run CO allocations (assessments/distributions).
  5. Reconcile GL with sub-ledgers; review FS10N balances.
  6. Close the posting period (OB52 — usually a controlled role).
💡 Almost every line-item report (FBL1N, FBL3N, KSB1) can be exported to Excel. Save an ALV layout with the columns you need — see saving ALV layouts — and automate the export with SAP GUI scripting.
⚠️ T-codes and menus vary with SAP version (ECC vs S/4HANA) and your company’s configuration. S/4HANA also offers Fiori apps that replace some of these screens.
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