While the filename is the human-friendly label, the filePath is where Relic actually goes to fetch the image when you open a PhotoRecord. It is set when the photo is uploaded and points to the stored object so the catalogue entry can render a thumbnail or serve the full-resolution file on demand. Together with mimeType and sizeBytes, the filePath completes the technical description of the stored image, and it is a required field because a record with no file location could not display its photograph.
Technical section
Data model, API, and internals — visible to developers.