Breakdown of Door een fout begon de sleuteloverdracht later.
Questions & Answers about Door een fout begon de sleuteloverdracht later.
Here door means because of or as a result of, not physical through.
In Dutch, door can introduce a cause:
- Door de regen bleef ik thuis. = Because of the rain, I stayed home.
- Door een fout begon de sleuteloverdracht later. = Because of an error, the key handover started later.
So although door often literally means through, in sentences like this it commonly expresses cause.
Een fout means an error / a mistake in a general, non-specific way.
- een fout = an error, some error
- de fout = the error, a specific error already known from context
In this sentence, the speaker is just saying that there was some mistake, not necessarily one already identified for the listener. That is why een fout is natural here.