If individual customer accounts are used, the customer account corresponds to the Shopware customer number. The number range (= sequential customer number) can be adjusted under Settings → Basic Settings → Shop Settings → Number Ranges. These must match your DATEV chart of accounts. Please note that settings made here only apply to newly created customers. If you want to adjust the customer numbers of your existing customers, it's best to contact your agency.
Choose the number range so that it falls within the customer (debtor) number range of your DATEV chart of accounts. DATEV keeps personal accounts separate: customers (debtors) and suppliers (creditors) are located in different ranges. If you accidentally assign numbers from the creditor range to customer numbers, the export file cannot be imported into DATEV.
The customer (debtor) number range is exactly one digit longer than the configured general ledger account number length. For four-digit general ledger accounts, customers (debtors) are, for example, in the range 10000–69999 and suppliers (creditors) in the range 70000–99999. If in doubt, confirm the correct range with your tax advisor. You can find more information in the DATEV documentation.
Note: Since DATEV expects a maximum personal account length of 9 digits, your customer numbers must also be a maximum of 9 digits long for the export to work.
