External Scheduling in the Graphical Monitor 
Use
The SAP System uses the
graphical monitor to display the distribution of resources either in the external scheduling system or in the SAP System itself. This is only possible if scheduling is performed for individual technicians.Prerequisites
You have assigned the function module
READ_WORKLOAD to the fixed value R in Customizing under Plant Maintenance and Customer Service ® Maintenance and Service Processing ® Maintenance and Service Orders ® Scheduling ® External Scheduling ® Configure Communication.This function module defines the interface that reads the actual dates for the technician from the external scheduling system when the graphical monitor is started or refreshed.
Activities