<piAckSubscriptionUpdate>
<all-updates-accepted>
CPT-Boolean
</all-updates-accepted>
[1]
<reason-not-accepted>
CPT-Footnote
</reason-not-accepted>
[0..1]
<current-subscriptions>
[0..1]
Start Sequence
[1..20]
End Sequence
</current-subscriptions>
</piAckSubscriptionUpdate>