Importing Transport Requests into the ABAP System 
You have installed SAP NW ABAP and configured it for imports from particular areas (such as training courses / documentation). More information: Configuration for Content Storage.
Place the SAP Knowledge Warehouse content DVD (or CD) in the relevant disk drive of your SAP NW ABAP system.
Copy the data files (for example, R009LEN.SAP) from the DVD/CD to the directory usr\sap\trans\data on the SAP NW ABAP system.
Copy the cofiles (for example, K009LEN.SAP) from the DVD/CD to the directory usr\sap\trans\cofiles on the SAP NW ABAP system. If it is in place, remove the write protection for these files.
The import is usually performed using the Transport Management System (transaction STMS).
After completing the imports, check the transport logs (transaction STMS).