An ERN feed containing a
NewReleaseMessage but no Resource file is valid.
In most situations, a DSP should receive binaries with the initial NewReleaseMessage but, especially when communicating pre-order Releases, this may not always be the case.
DSPs must, however, be in receipt of all binaries on “street date” of a Release. In order to signal that a DSP is missing binaries it may wish to use the
ErnAcknowledgementStatusMessage defined in the FTP choreography for Release deliveries to signal to the label that it is missing binaries:
Users of the web service choreography can use the POST ReleaseStatus method to post an
ErnAcknowledgementStatusMessage as per above.