ChangeFormat elements are placed first in changeFormat1 and then in changeFormat2, if changeFormat1 is not null, and
additional elements are stored changeFormat2, if there are more than 2, then the second one is overwritten
This header block may be employed by a sender to signal to a receiver that the latter should add a specific additional
facet to the overall processing context in which any action(s) are invoked as a result of processing any ID-* message
also conveyed in the overall SOAP-bound ID-* message.