# Sales The Sales files record Invoices, Cash Sales, Credit Notes and Refunds which are known collectively as Sales Documents. Depending on the system you are using the Sales files may be stored locally in each machine and transferred to a master sales batch or they may be stored centrally. The Sales files contain the raw data that has been input by your staff. These files are processed in a number of ways against the Debtor, Order, Stock, Cash and Ledger files. Because these files are separate to the systems they update, it is possible to continue sales input at times when other systems are not available. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guide.acumensystems.com.au/beginning/overview/sales.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.