Sometimes. It usually depends on what goods your importing and how detailed your invoice is.
Your far more likely to avoid the delays associated with customs inspections if your invoice lists all the specific products in the consignment (e.g. 5 x men’s t-shirts, 1 x laptop, 8 x women’s pants etc.) as opposed to generic descriptions like “clothing” or “homewares” because it reduces the likelihood of a customs officer suspecting your consignment contains items that would warrant inspection, when it in fact doesn’t.
As a general rule of thumb, the more detail you include on your invoice the better. It will save you time and usually money too.