How to specify the document number of a journal entry?

[SAPSupport]

Even when I fill 'Reference document number', the journal entry has a different number

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[SAPSupport · Accepted solution]

While it's not possible to manually assign document numbers to journal entries for audit reasons, you can specify your own number ranges based on Company code, document type and fiscal year. Please see the following chain of documentation for the background on this subject - https://help.sap.com/docs/SAP_S4HANA_CLOUD/0fa84c9d9c634132b7c4abb9ffdd8f06/7750d7531a4d424de1000000...