> For the complete documentation index, see [llms.txt](https://docs.payfacto.com/centre-de-documentation-payfacto/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payfacto.com/centre-de-documentation-payfacto/maitred-pos/maitred/maitred-complete-online-documentation/chap-10-database/reconstruction/purchase.md). # Purchase This option fixes the purchase file if the file become corrupted. Some information may be lost if the files are badly corrupted. You should use this option only at the request of a PayFacto software support specialist. Some reconstruction may stop your system for a few minutes. When you enable this option, the file will be reconstructed. While it is reconstructing, you will see a File rebuilder Back-Office, which displays the name of the file. In addition, the system will scroll through all the records while displaying a Please Wait message. Upon completion, you will be returned to your Database Back-Office screen. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://docs.payfacto.com/centre-de-documentation-payfacto/maitred-pos/maitred/maitred-complete-online-documentation/chap-10-database/reconstruction/purchase.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.