Knowledge

Blog

Practical insights and expertise on SAP FI/CO, S/4HANA and certifications.

All S/4HANA Migration & Adoption General SAP Certification Go-Live Training SAP Explained Properly Practical Guide Year-End Closing in S/4HANA SAP in Everyday Work SAP FI Training & Education SAP FI Fundamentals SAP S/4HANA SAP News

Latest

Latest Article

Go-Live Training

What Really Makes SAP End-User Training Work

Daily rate, duration and headcount appear in almost every proposal — and say little about whether your people can do their jobs after go-live. This article sets out the characteristics that identify good SAP end-user training, with concrete guidelines on timing, group size and hands-on share, plus one question per characteristic to ask before you sign.

SAP Explained Properly

Posting Keys in SAP: What Do 40, 50, 31 and 01 Mean?

Two digits, three determinations: the posting key defines the account type, the posting side and the field status for every line item. It is barely visible in the Fiori apps, but always present in the document display. This article explains the key posting keys, the logic behind their numbering, and why two of them are enough for G/L accounts.

10.08.2026 Read more →

SAP in Everyday Work

Reversal, Counter Entry or Document Change? The Right Correction Method in SAP

Errors in posted documents cannot simply be overwritten in SAP. Whether you need a document reversal, a counter entry, or a direct document change depends on what went wrong, whether the period is still open, and whether the document has already been cleared. This article explains the differences and helps you choose the right approach.

25.06.2026 Read more →

SAP Explained Properly

What Is a Document Flow in SAP and Why Does It Matter?

Every posting in SAP creates a document, and documents belonging to the same transaction are automatically linked. Understanding this principle helps you answer questions like "Why can't I reverse this document?" or "Where is the payment?" independently. This article explains the document flow concept, walks through two practical examples, and clarifies what changed in S/4HANA.

22.06.2026 Read more →

S/4HANA Migration & Adoption

The Most Common Mistakes After an S/4HANA Migration

The go-live is done — and now the real problems begin. Fiori adoption, data quality, poorly timed training, unresolved custom developments, and an underestimated hypercare phase: this article shows where S/4HANA projects fail after go-live and what decision-makers, HR, and project managers can learn from it.

16.06.2026 Read more →

SAP Explained Properly

General Ledger, Subledger, Reconciliation Account: How Do They Fit Together?

Anyone working in SAP FI encounters these three terms constantly — but how they interact is often unclear. This article explains the underlying logic, why reconciliation accounts cannot be posted to directly, and what fundamentally changed with S/4HANA and ACDOCA.

15.06.2026 Read more →

SAP in Everyday Work

Why Does SAP Post Automatically? And When Do I Need to Step In?

Suddenly there are more line items in the document than you entered. Tax, exchange rate differences, depreciation: SAP posts many things automatically. This article explains why, which six situations trigger it, and when users need to step in themselves.

11.06.2026 Read more →

S/4HANA Migration & Adoption

SAP GUI vs. Fiori: Why Many Users Want to Switch Back

After go-live, many users find their way back to SAP GUI. Not a failure — a familiar pattern with concrete causes. This article explains why it happens, what organizations lose as a result, and what SAP Fiori offers that simply does not exist in the GUI.

09.06.2026 Read more →

SAP Explained Properly

What Is a Company Code in SAP? A Simple Explanation for Users

The company code appears in almost every SAP activity — and is rarely properly explained. This article shows what it means, why there are multiple ones, and what happens when you work in the wrong one. For users who work with SAP every day.

08.06.2026 Read more →

S/4HANA Migration & Adoption

E-Invoicing in SAP: Why Acting Now Makes All the Difference

Since January 2025, companies must be able to receive e-invoices — and from 2027, sending them becomes mandatory. Organizations not yet prepared in SAP risk more than compliance issues: the VAT input tax deduction is directly at stake. This article explains what is really on the line, which SAP components are affected, and why the consulting market is already under pressure in 2026.

02.06.2026 Read more →

SAP FI Training & Education

Why SAP Key Users Struggle After Go-Live — And What Helps

Key users are considered the critical success factor in every SAP implementation — and after go-live, they are often left to manage alone. A survey shows: 80 percent of organizations report key user overload, and nearly a third see project goals at risk. This article explains why — and what organizations and leaders can do about it.

26.05.2026 Read more →

SAP FI Fundamentals

The 10 Most Important SAP Tables – An Overview for Consultants and Users

Where does the data actually live? Anyone working with SAP FI/CO will face this question sooner or later. This article explains the ten most important tables — what they contain, who needs them, and when they matter in day-to-day work. With practical notes on both ECC and S/4HANA.

20.05.2026 Read more →

Load more articles

Newsletter

SAP knowledge straight to your inbox

Practical tips, insights and news on SAP FI/CO – for users, key users and everyone who wants to truly understand SAP.

What to expect

Practical SAP FI/CO tips from real projects
Updates on certifications & SAP news
Monthly, no spam – unsubscribe any time

Contact

Request SAP FI/CO Training

Practical training, certification preparation and individual project support – get in touch.

Request training

Blog

Latest Article

What Really Makes SAP End-User Training Work

You might also like

SAP knowledge straight to your inbox

Request SAP FI/CO Training