IPA: /ɪnˈkɒmpətəblɪ/
KK: /ɪnˈkɒmpətəblɪ/
In a way that is not able to exist or work together with something else.
The two systems operate incompatibly, causing frequent errors.
Incompatibly → It is formed from "in-" (meaning not), "com-" (meaning together), and "patibilis" (from Latin, meaning able to suffer or endure). The word describes a state of being unable to exist or function together harmoniously.
Think of 'not' ('in-') being able to 'endure together' ('com-' and 'patibilis') — that's why incompatibly means not able to coexist harmoniously.