Exam C_TS4FI_2020 topic 1 question 9 discussion

There are two things the document type controls: *Which account types are allowed for postings: You can select one or more account types that can be used with the document type. This helps limit the use of the document type to the specific business cases it was designed for and protects from erroneous postings to a certain extent. For example, you could define a document type for customer invoices and restrict it so that it can only be used to post to customer accounts. *Whether negative postings are permitted: There is a checkbox in the document type definition labeled Negative Postings Permitted. The sources define a negative posting as a way to reduce transaction figures by posting negative amounts on the same side (debit or credit) as the original posting. This allows you to return the account to the status it would have been in had the original posting not occurred. You would use the Negative Postings Permitted checkbox to define whether this type of reversal is allowed for the document type.