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EPUBCheck · Package document (OPF)

OPF-074

Updated:

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.

The official message

Package resource "%1$s" is declared in several manifest items.

Default severity
Error. The EPUB breaks a rule of the specification and is invalid. Stores and Send to Kindle may reject it, and EPUBCheck exits with status 1.
EPUBCheck version
5.4.0

%1$s, %2$s… are filled in with the file, value or element EPUBCheck found.

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.

Terms used here

Other OPF messages

  • OPF-067 The resource "…" must not be listed both as a "link" element in the package metadata and as a manifest item.

Message text and severity from EPUBCheck 5.4.0 (W3C, BSD-3-Clause). Explanation by EPUBLab.

FAQ

What does EPUBCheck OPF-074 mean?

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.

Is OPF-074 an error?

OPF-074 is reported as error by default. The EPUB breaks a rule of the specification and is invalid. Stores and Send to Kindle may reject it, and EPUBCheck exits with status 1.