Question: Example:

> 
> The accident happened due to a lack of communication (or coordination) between the parties involved.
> 
> 
>

Answer: 
**Miscommunication** — [Cambridge](http://dictionary.cambridge.org/dictionary/english/miscommunication)

> 
> *noun* Failure to communicate ideas or intentions successfully
> 
> 
> *"A spokeswomen blamed the confusion on miscommunication between the company and its customers.*"
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>
**Confusion** has a couple definitions along this line: [[Merriam-Webster](http://www.merriam-webster.com/dictionary/confusion)]

> 
> a situation in which people are uncertain about what to do or are
>  unable to understand something clearly 
> 
> 
> 

and 

> 
> the feeling that you have when you do not understand what is
>  happening, what is expected, etc.
> 
> 
> 

So it would be: "the accident happened due to confusion between the parties involved."