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EPUBCheck · Package document (OPF)

OPF-015

Updated:

EPUBCheck OPF-015 is an error message: “The property "…" should not be declared in the OPF file.” A manifest item declares a property (such as svg, mathml or scripted) that the document does not actually use.

The official message

The property "%1$s" should not be declared in the OPF file.

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

  • Properties copied from a template or left after the SVG, MathML or script was removed.

How to fix it

Terms used here

Other OPF messages

  • OPF-014 The property "…" should be declared in the OPF file.
  • OPF-016 The element "rootfile" is missing its required attribute "full-path".
  • OPF-013 Resource "…" is declared with MIME type "…" in content, but has MIME type "…" in the package document.
  • OPF-017 The attribute "full-path" on element "rootfile" must not be empty.
  • OPF-012 Item property "…" is not defined for media type "…".
  • OPF-018 The "remote-resources" property was declared in the Package Document, but no reference to remote resources has been found.

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

FAQ

What does EPUBCheck OPF-015 mean?

EPUBCheck OPF-015 is an error message: “The property "…" should not be declared in the OPF file.” A manifest item declares a property (such as svg, mathml or scripted) that the document does not actually use.

Is OPF-015 an error?

OPF-015 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.