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EPUBCheck · Resources and references

RSC-001

Updated:

EPUBCheck RSC-001 is an error message: “File "…" could not be found.” EPUBCheck looked for a file that the EPUB says exists and did not find it in the archive.

The official message

File "%1$s" could not be found.

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 wrong path or a wrong upper/lower case in the name: paths inside an EPUB are case-sensitive.
  • A file that was deleted or renamed after it was referenced.

How to fix it

  • Check the path EPUBCheck reports against the files really in the archive, including case.
  • Restore the file or correct the reference.

Terms used here

Other RSC messages

  • RSC-002 Required META-INF/container.xml resource could not be found.
  • RSC-003 No rootfile tag with media type "application/oebps-package+xml" was found in the container.
  • RSC-004 File "…" is encrypted, its content will not be checked.
  • RSC-005 Error while parsing file: …
  • RSC-006 Remote resource reference is not allowed in this context; resource "…" must be located in the EPUB container.
  • RSC-007 Referenced resource "…" could not be found in the EPUB.

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

FAQ

What does EPUBCheck RSC-001 mean?

EPUBCheck RSC-001 is an error message: “File "…" could not be found.” EPUBCheck looked for a file that the EPUB says exists and did not find it in the archive.

Is RSC-001 an error?

RSC-001 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.