# EPUBCheck OPF-074: Package resource … is declared in…

Source: https://epublab.com/epubcheck/opf-074/ (updated 2026-11-03)

EPUBCheck OPF-074 is an error message: “Package resource "…" is declared in several manifest items.” The same file is declared by more than one manifest item.

- Official message (EPUBCheck 5.4.0): Package resource "%1$s" is declared in several manifest items.
- Default severity: Error

## Typical causes

- A file added twice to the manifest with different ids.

## How to fix it

- Delete the extra item and update anything that referred to its id.

Message text and severity: EPUBCheck (W3C, BSD-3-Clause). Explanation: EPUBLab.