Webclass 128: Unusual customer and supplier transactions – how can we find them and what do they mean?

Q1. If we artificially net-off customer transactions to vendor accounts, what might we see in the data?

Credit customer, debit vendor

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Debit vendor, credit customer

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Q2. If customer invoices are reversed, what migh we see in the data?

Journal entries that credit customer and debit revenue

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Jounal entries that debit customer and credit revenue

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Q3. If we have supplier payments that are not supported by invoices, what might we see in the data?

Supplier payments that are not cleared

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Supplier payments that are booked to debit AP

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Q4. If we have customer sales of product at a loss, what might we see on the dashboard?

The billing document that is booked with COGS in the same journal entry, has a COGS value that is greater than the value posted to the AR account

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The billing document that is booked with COGS in the same journal entry, has the COGS value booked to credit rather than to debit

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Q5. Why might we need an additional Excel file that lists out the AR clearing accounts?

Because sometimes the customer payment transactions are booked as debit AR clearing and credit customer

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Because sometimes the customer payment values are missapropriated

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Q6. If the field SKB1_HBKID is filled in, what does this indicate to us?

That the General Ledger account is linked to a house bank account

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That the General Ledger account is the same number as the bank account of the customer

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Q7. Which account type is for customer?

Account type D

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Account type K

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Q8. How might someone cheat by using the AR clearing account?

Send the customer the wrong bank account information and then net-off the customer to AR clearing

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Send the customer the AR clearing account instead of the company bank account

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Q9. How could the auditor check if the AR clearing account is being misused?

If there are transactions in the AR clearing account that are not cleared and/ or the balance of the AR clearing account is growing over time

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If there are transactions that debit AR clearing and credit customer

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Q10. Which python library could we use to see outliers among a collection of correlated risk KPIs?

Isolation Forest

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Spacey

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WC128 – Unusual customer and supplier transactions – how can we find them and what do they mean?

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Webclass 128: Unusual customer and supplier transactions – how can we find them and what do they mean?

admin June 9, 2026

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