we required to link quotation to customer PO to Sales Invoice and our suppliers purchase invoice. To get to know a single project profit.
that is How much we quote to customer and how much we billed to customer and how much we will get from our purchaser total profit of our project .
Manager’s project accounting capabilities are not extensive. Tracking codes are the best approach currently. See https://www.manager.io/guides/8956.
Understand, however, that your sales quote has no bearing on anything. Quotes have no financial impact. Net profit within a tracking code will depend only on income and expenses. Your post suggests you are also looking to project profit in the future. Manager has no such capability. That is a pricing activity, not accounting, which only records what has already happened.