Back to Error DirectoryW3C EPUBCheck Standard
OPF-083Critical Ingestion Error

Found an EPUB Dictionary collection containing no Search Key Map Do...

Found an EPUB Dictionary collection containing no Search Key Map Document.

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Fix all OPF-083 errors in your EPUB automatically

PreFlight checks for OPF-083 issues in memory and provides 1-click remediation during client-side packaging.

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What This Error Means in Plain English

EPUBCheck detected Found an EPUB Dictionary collection containing no Search Key Map Document.. Digital reading systems and bookstores require standard conformance to ensure compatibility across all reading apps.

Why Retailers & EAA Regulations Block This File

Automated book distributors (Apple Books, Amazon KDP, Kobo, and IngramSpark) run strict EPUBCheck validation on ingest and reject non-compliant files.

Technical Specification: W3C EPUBCheck rule OPF-083: Found an EPUB Dictionary collection containing no Search Key Map Document.

Manual Fix Instructions (for Sigil / Calibre)

  1. Locate the file and line flagged under rule OPF-083 in your EPUB editor (Sigil or Calibre).
  2. Apply the required syntax correction matching the OPF-083 specification.
  3. Re-pack and validate with PreFlight EPUB to confirm zero residual errors.