In making a business plan, there are several things that need to be done before writing or making a business plan is to make sure that the business idea that has been found is still feasible or not. So it is necessary to do a complete business feasibility analysis (Full Feasibility analysis). One way is to use The Litmus Test. Mention and Explain in full what are the components that can be used to perform the analysis eligibility based on the litmus test, and also explain how each component The source must be measured to get a business idea. Explain each and give examples of problems from each of these sources