In this task, I prepared a sales invoice in Xero for WTS_Trading for the service Search Engine Optimization (Keyword Research). The invoice included a quantity of 10 units at a rate of 100, with sales recorded at 1,000. I accurately applied a 12% sales tax, resulting in a tax amount of 120 and a total invoice value of 1,120. This process ensured precise billing, correct tax computation, and well-documented sales records for financial tracking and reporting.