SAP General Ledger Accounting: Key Concepts Every C_TS4FI Candidate Must Know

1Chart of Accounts: The Foundation of GL Configuration

The chart of accounts (CoA) defines the structure of all GL accounts available in SAP. There are three types you must understand for the exam:

• Operating chart of accounts — used for daily postings within a company code; every company code must be assigned exactly one
• Country chart of accounts — used to meet local legal reporting requirements; optional, mapped to operating accounts
• Group chart of accounts — used for consolidated reporting across a corporate group; optional

2GL Account Master Data and Account Groups

A GL account master record exists at two levels: the chart of accounts level (account number, name, account type) and the company code level (currency, field status, open item management).

Account groups control the number range and the field status (required, optional, suppressed) for account master fields. You create and maintain GL accounts using T-code FS00. A common exam trap: if a field is suppressed at the account group level, it cannot be made required at the posting key level — the stricter restriction always wins.

Open item management is a critical setting: accounts with this flag require every posted debit to be matched and cleared against a credit (and vice versa). It is mandatory for reconciliation accounts like GR/IR clearing and bank clearing, but must NOT be activated on reconciliation accounts for subledgers (AP, AR, AA).

3Document Types, Posting Keys, and Number Ranges

Every SAP document is assigned a document type (configured in OBA7) that controls: which account types can be posted to, the number range for document numbering, and whether the document can be reversed.

Common document types to memorize: SA (GL account posting), AB (accounting document), DR (customer invoice), DG (customer credit memo), KR (vendor invoice), KG (vendor credit memo), AA (asset posting).

Posting keys control the debit/credit indicator and which account types are allowed at the line item level. Posting key 40 = debit GL, 50 = credit GL, 31 = credit vendor, 21 = debit vendor, 01 = debit customer, 11 = credit customer.

4Posting Periods and the Period Control Table

One of the most frequently tested configuration areas is posting period management. SAP uses a posting period variant (assigned to each company code) that controls which accounting periods are open for posting.

The period control table (T-code OB52) allows you to open or close periods by account type: + (all accounts), A (assets), D (customers), K (vendors), M (materials), S (GL accounts). This granularity means you can close a period for vendors while leaving it open for GL corrections.

Each period table row defines a valid range for Period 1 (current period) and Period 2 (special period for year-end). Special periods 13–16 are used for closing postings after the regular fiscal year-end.

5Recurring Entries, Accruals, and Parked Documents

Recurring entries automate periodic postings (like monthly rent). You create a recurring entry reference document using FBD1 and then execute it with F.14 (recurring entry posting program). The reference document does not create a real accounting document — it only executes when the program runs.

Accrual/deferral postings (FBS1) are used to post expenses or revenues in the correct period and automatically reverse in the next period. The reversal date must be in the next posting period.

Parked documents (FV50) are saved without creating an actual accounting document. They do not affect balances and require explicit posting to become real documents. This is useful when a document needs approval before it becomes binding.

6New GL and Leading Ledger Concepts (S/4HANA)

In SAP S/4HANA, the Universal Journal (table ACDOCA) replaces multiple separate tables and provides a single source of truth for all accounting postings. The concept of parallel accounting is achieved through ledgers.

The leading ledger (usually 0L) is used for the primary accounting standard (IFRS or local GAAP). Non-leading ledgers can be used for parallel reporting (e.g., US GAAP alongside IFRS). Only the leading ledger is mandatory and assigned to all company codes.

For the exam, know that document splitting allows line items to be split across dimensions (profit centers, segments) automatically based on configuration rules, enabling segment-level balance sheets.