Lesson 3 of 5
Integration in one picture
7 min
This lesson follows a single business event, a goods issue, and shows everything it touches. If you understand this one picture, you understand why people say SAP is "integrated" and why a small change in one area can surprise another.
The event
Contoso has sold 10 alternators, product CMC-ALT-100, to a fleet customer. The warehouse at plant 1710 (Detroit) has picked and packed them against the outbound delivery. The shipping clerk now posts the goods issue: the step that says "these goods have physically left our hands." Each alternator has a standard cost of $150, so the goods are worth $1,500 at cost.
One click, one posting. Here is what the system records in that same moment.
In the old Contoso, those four effects lived in four systems and were connected by emails, exports and people. Now they are created together, by one posting, with one date and one user. There is no window in which the stock has moved but the ledger has not.
Where the accounts come from
Nobody types "cost of goods sold" during the goods issue. The system works out which general ledger accounts to use from configuration called account determination: a set of rules that says, for this kind of movement, for this kind of material, in this plant, post to these accounts. The clerk only says "ship it"; the configuration decides how the accounting looks.
That is powerful and a little dangerous. If someone changes the material’s valuation data, or the account determination rules, the very next goods issue posts differently, even though the shipping clerk did exactly what they always do. The screen looks the same. The accounting does not.
| Step | What the user sees | What happens behind it |
|---|---|---|
| Post goods issue | A message that the delivery was saved | Material document plus journal entry: inventory down, cost of goods sold up |
| Create billing document | A billing document number | Journal entry: customer receivable up, revenue up, sales tax where it applies |
| Post incoming payment | A journal entry number | Bank up, receivable cleared against the invoice |
What the user sees versus what the system posts in order-to-cash
Following the trail
Because every step references the one before it, you can walk the trail in either direction. From the sales order you can open the document flow and see the delivery, the goods issue’s material document, the billing document and the journal entries. From a journal entry in finance you can drill back to the billing document and the order that caused it. Later courses show the exact apps and transactions for this. For now, remember that the trail exists, because it is your best evidence when you test.
What would you do?
The IT team changed a setting so that goods issues from Chicago plant 1720 post to a new inventory account. Shipping tested it: deliveries post without errors. What else should be checked before sign-off?
- One goods issue updates inventory, financial accounting, management accounting and the sales documents at the same time.
- Account determination decides which accounts are posted; the user never types them.
- A change can leave the screen unchanged while the accounting result changes.
- Document flow lets you trace any posting back to its source, which is your best test evidence.
Check your understanding · not graded
Lesson check
1. When Contoso posts a goods issue for 10 alternators, what happens in financial accounting?
2. What decides which general ledger accounts a goods issue posts to?
3. Why can a change that leaves the screen unchanged still be a risk?