When you are applying in any educational institute for a job, you need a resume stating your skills, degrees, accomplishments and experiences. The CV should be unique and convince the employer about the suitability of the candidate for the position.
Or perhaps, the invoice will be sent electronically through email. Or you may require a handwritten invoice form that your technician can complete in the field. Most likely, your company will require a combination of these. Using a template can ensure that your companys design and branding elements are consistent.