adlnet/xAPI-Spec — pull request #533 by andyjohnson (2014-11-06 16:11:10+00:00)
Title: Language around Not rejecting Voiding Statements

The current version of the spec is silent on the behavior on what an LRS does if a voiding Statement comes in and the target is not available. As we've discussed, timing issues could cause this delay and an LRS cannot reject solely on this. This is a SHOULD NOT for this version and will be a MUST NOT for 2.0.