The phrase "already existing system" is correct and usable in written English.
It can be used to refer to a system that is currently in place or has been established prior to a certain point in time.
Example: "The new software will integrate seamlessly with the already existing system to enhance overall efficiency."
Alternatives: "pre-existing system" or "currently established system".
An integrated disease surveillance system already exists under the director general of health services; any new work on climate change and health should be linked to the already existing system.
Already existing system implementations and system approaches can be assigned to exactly one level.
The CPG system was integrated with an already existing system for computerised procedure presentation, and enhanced with a number of other functions to produce a system for integrated computerisation of operating procedures.
The bill would mandate E-Verify, an already existing system to check whether potential employees are eligible to work in the United States.
Simulated developmental mechanisms are usually chosen very specifically, carefully taking into account other, already existing system features and the desired system behavior.
Its implementation thus depends on its ability to meet the requirements of multiple stakeholders and to integrate with an already existing system of practices and parameters.
Solutions for generating parsers based on a DSL specification [14, 26, 27] focus on enabling interoperability of already existing systems.
In this context Mass Customization refers to the possibility to evolve from already existing systems to the novel ones that can be personalized, without increasing their cost and causing the new technologies to emerge.
The ESEOO Project, launched after the Prestige crisis, has boosted operational oceanography capacities in Spain, creating new operational oceanographic services and increasing synergies between these new operational tools and already existing systems.
Nevertheless, the scope goes far beyond and can be extrapolated to any other FMS, so this is a very useful tool to create virtual laboratories for manufacturing or to expand and analyze the behavior of already existing systems.
The evaluation results show that the proposed methodology allows rapid development of new dialog managers as well as to explore new dialog strategies, which permit developing new enhanced versions of already existing systems.
