Step-by-step explanation:
In this scenario, the ideal would be to write a persuasive request, where there is an objective and logical explanation about the observed problem, in the case of the question, about the slowness of the sellers' expenses reimbursement system.
The persuasive request must be written strategically to convince the recipients and draw attention to their point of view. It must also be written in a way that gives credibility to create interest and motivation for the acceptance of your request.