A management server comprising: a communication unit configured to communicate with a communication terminal that utilizes a service and with a service providing server related to the service; and a data processing unit, wherein the data processing unit is configured to receive, from the communication terminal, system configuration information including a memory system configuration of the communication terminal, acquire priority order information from the service providing server via the communication unit, said priority order information indicating a memory area processing on which takes precedence when the communication terminal has a plurality of process target memory areas, determine, in accordance with the system configuration information and the priority order information, a memory area in the communication terminal where service data for the communication terminal to utilize the service is recorded or a memory area in the communication terminal from which the service data is read, generate a command to execute a process to access the memory area or service data to be recorded in the memory area, and transmit the command or the service data to the communication terminal via the communication unit. a communication unit configured to communicate with a communication terminal that utilizes a service and with a service providing server related to the service; and a data processing unit, wherein the data processing unit is configured to receive, from the communication terminal, system configuration information including a memory system configuration of the communication terminal, acquire priority order information from the service providing server via the communication unit, said priority order information indicating a memory area processing on which takes precedence when the communication terminal has a plurality of process target memory areas, determine, in accordance with the system configuration information and the priority order information, a memory area in the communication terminal where service data for the communication terminal to utilize the service is recorded or a memory area in the communication terminal from which the service data is read, generate a command to execute a process to access the memory area or service data to be recorded in the memory area, and transmit the command or the service data to the communication terminal via the communication unit. receive, from the communication terminal, system configuration information including a memory system configuration of the communication terminal, acquire priority order information from the service providing server via the communication unit, said priority order information indicating a memory area processing on which takes precedence when the communication terminal has a plurality of process target memory areas, determine, in accordance with the system configuration information and the priority order information, a memory area in the communication terminal where service data for the communication terminal to utilize the service is recorded or a memory area in the communication terminal from which the service data is read, generate a command to execute a process to access the memory area or service data to be recorded in the memory area, and transmit the command or the service data to the communication terminal via the communication unit.