To add to my earlier answer, if the terms and conditions have not been complied with, but non-compliance does not have a bearing on the claim, then the claim will still be paid.
For example, there could be a policy term which requires you to always set a fire alarm and you failed to do so - clearly not setting a fire alarm would not have a bearing on the theft and therefore the claim will be paid.
On the other hand, and again for example, if it was a policy term that hired plant is chained to an immovable object while on site and it wasn't, then clearly this would have a bearing on the theft and the claim would not be covered.