1. SAP S/4HANA 2023 Help Portal
"Parallel Accounting": The documentation outlines the two main approaches: the parallel ledger approach and the parallel accounts approach. It states
"In the accounts approach
you post the valuations for the different accounting principles to different G/L accounts within a common ledger." The leading ledger is the common ledger in this context. (Accessed under SAP S/4HANA -> Product Assistance -> English -> Enterprise Business Applications -> Finance -> Accounting and Financial Close -> General Ledger Accounting (FI-GL) -> Parallel Accounting).
2. SAP S/4HANA 2023 Help Portal
"Asset Accounting (FI-AA)" -> "Posting of Valuations": This section details how different depreciation areas
each assigned to an accounting principle
can post to the general ledger. When using the accounts approach
these different areas post to different accounts within the same ledger. (Accessed under SAP S/4HANA -> Product Assistance -> English -> Enterprise Business Applications -> Finance -> Asset Accounting (FI-AA) -> Integration -> Posting of Valuations).
3. SAP Learning Hub
Course S4F02 "Financial Accounting in SAP S/4HANA - Academy Part II": The unit on Parallel Accounting explains that while the parallel ledger approach is recommended
the accounts approach is still supported. It clarifies that the accounts approach uses different G/L accounts within the leading ledger to differentiate valuations for multiple accounting principles. (Refer to Unit 5: Parallel Accounting
Lesson: Implementing Parallel Accounting).