Field 
Field applications enable sales representatives and service technicians who work in the field to use marketing, sales, and service functions of SAP Customer Relationship Management (SAP CRM) in an offline environment.
To manage customer relationships successfully, companies that have employees working in the field must make sure that their employees have up-to-date and complete information about the customers they visit. In turn, new information gathered by employees in the field must be made available to other employees who interact with the customer. Field applications provide a range of functions and integration capabilities to meet these needs.
Sales representatives and service technicians can access and update customer relationship data on their laptop computers and other mobile devices while they work in the field.