> For the complete documentation index, see [llms.txt](https://docs.libnova.com/libsafe-advanced-preservation-administrator-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.libnova.com/libsafe-advanced-preservation-administrator-manual/frequently-asked-questions-and-additional-considerations/miscellaneous.md). # Miscellaneous **Ingestion and/or retrieve jobs are finishing with errors, in general form. What may be the cause for the failure?** This behavior has, as only possible causes, the following: * no free space in the temporary interchange storage -> proceed to free some * inadequate permissions for the system user that **LIBSAFE** uses for carrying out the application tasks -> see your system administrator about how to solve this * inability to reach the assigned storage path -> see with your system administrator that the storage units are available from a system’s point of view **The interface is asking me for a Regex expression. What is that?** A Regex expression is an expression that allows for selecting text chains depending on their composition. **LIBSAFE** makes use of this functionality to offer a way to select the files and folders that make up an object, for the carrying of a specific task. This manual includes a complete section to this regard in the Annexes. Please, check section 6.1 Automatic ingestion and retrieval processes. --- # 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.libnova.com/libsafe-advanced-preservation-administrator-manual/frequently-asked-questions-and-additional-considerations/miscellaneous.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.