英语翻译The IT application only contributes to achieving the cor

英语翻译
The IT application only contributes to achieving the corporate objectives if the system is available to users in the event of failure or necessary modifications is supported by the processes of maintenance and operations.
十分搞不清楚句中“……in the event……”到底是个啥结构,我擦,状语还不够多么,老外怎么那么恶心.
我知道。但是我想知道的是整个句子的翻译。是关于MIS的一篇论文。