ODF Validation

file line column error
styles.xml Missing id(s) for text-style: 'Footnote_20_anchor', 'Endnote_20_anchor'.
content.xml Missing id(s) for paragraph-style: ''.
styles.xml Missing id(s) for paragraph-style: ''.
styles.xml Missing id(s) for text-style: 'Footnote_20_Symbol', 'Endnote_20_Symbol'.