What is transport request and what is main purpose of transport request?
Transport Requests are a way in which you can record changes and move them across systems. By default the production system is not modifiable and is not open for customizing. Because of this you cannot do any modifications on the production system directly. For that purpose you must use the SAP transport tool.
Types of Transport Requests: 1. Customizing Transport Request 2. Workbench Transport Request