XEP-0060 §8.9.2.4 Multiple Simultaneous Modifications —
http://xmpp.org/extensions/xep-0060.html#owner-affiliations-multi — claims:
The owner MAY change multiple affiliations in a single request. If one of the entity
elements specified is invalid, the service MUST return an IQ error (which SHOULD be
<not-acceptable/>) with the invalid entries, where the affiliation returned is
the original, un-altered affiliation.
But the following example, Example 207, does not include the invalid
entries in the IQ error.
Regards,
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Will