Back to Error DirectoryIngramSpark / Lightning Source
ING-XML-ERRCritical Ingestion Error

IngramSpark Fatal XML Validation Rejection

IngramSpark upload rejected due to unclosed tags or syntax failure.

Automated 1-Click Fix Ready

Fix all ING-XML-ERR errors in your EPUB automatically

PreFlight isolates the exact line syntax defect and sanitizes the XHTML chapter directly in browser memory.

Scan & Fix Now

What This Error Means in Plain English

IngramSpark distributes your book to 40,000+ libraries and independent bookstores. Their ingestion parser is famously unforgiving: a single syntax error triggers a generic rejection notice.

Why Retailers & EAA Regulations Block This File

Ingram's automated distribution pipeline halts immediately when any file in the container fails XML validation.

Technical Specification: IngramSpark executes rigorous EPUBCheck 4+ automated tests prior to file approval and metadata distribution.

Manual Fix Instructions (for Sigil / Calibre)

  1. Run the file through an EPUBCheck validator to identify the exact line and character causing syntax failure.