> For the complete documentation index, see [llms.txt](https://docs.payfacto.com/payfacto-knowledge/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/payfacto-knowledge/maitred-pos/maitred/maitred-complete-online-documentation/chap-10-database/reconstruction/pre-order.md).

# Pre-Order

This option fixes the pre-order 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 might 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.