What are settings you can define in a document type?

In a document type, you can define the reversal document type, number range, and posting level. The reversal document type is used for reversing entries. The number range determines the range of document numbers that can be assigned to documents of that type. The posting level defines whether the document type is used for single-level or cross-company code postings. You can find more information in the SAP S/4HANA Finance for Group Reporting documentation under "Document Types".