2.1.300 Part 1 Section 17.11.2, endnote (Endnote Content)

For additional notes that apply to this portion of the standard, please see the notes for footnote, §17.11.10(a); oMath, §22.1.2.77(f); oMathPara, §22.1.2.78(c).

a.   The standard allows any integer for footnote or endnote ID.

Word only allows integers between -2147483648 and 32767.