The item that is placed using a Sales order must be extended to the sales area of an organization to sales order/customer, otherwise it won’t be possible to transact with this material. This confirms that there is a link between SAP SD and MM module, when a sales order is created and fulfilled. Similarly, there are many other links between two modules. http://webtrackker.com/SAP_SD_Training_in_Noida_sector_16_15_63_3_18_62_71_64.php