The government was bound by treaty obligations to maintain its existingcommitments.
The British way in Warfare - 1688-2000 (1990)
More than half are put off because of lack of time and existingcommitments.
Times, Sunday Times (2007)
Seework commitment
Definition of 'existing'
existing
(ɪgzɪstɪŋ)Explore 'existing' in the dictionary
adjective [ADJECTIVE noun]
Existing is used to describe something which is now present, available, or in operation, especially when you are contrasting it with something which is planned for the future.