Document types for Entry view VS document type for General Ledger view

Scenario : When we use Document types for Entry view Vs document type for General Ledger view - 

Document Types for Entry View

In this activity, you create number ranges for documents type. Document types are used to differentiate the business transactions and to manage how document are stored.

Document Types for General Ledger View

You only have to make these settings for any non-leading ledgers that have a fiscal year variant that differs in at least one company code from the fiscal year variant of the leading ledger in this company code. In this case, the document number in the entry view does not correspond to the document number in the general ledger view and you have to define a separate document type with document number assignment for the general ledger view. For all non-leading ledgers that, in the company code to which the postings are made, have a fiscal year variant corresponding to the fiscal year variant of the leading ledger in this company code, the document number in the entry view always corresponds to the document number in the general ledger view.