The SCU uses the N-DELETE to request the SCP to delete an applicable Machine Verification SOP Instance. The SCU shall specify in the N-DELETE request primitive the SOP Instance UID of the applicable Machine Verification instance.

The SCP shall delete the specified SOP Instance, such that subsequent operations of the same SOP Instance will fail.

The SCP shall return the Status Code of the requested SOP Instance deletion. The meanings of success, warning, and failure status classes are defined in Annex C “Status Type Encoding (Normative)” in PS3.7.

If an N-DELETE is not issued, the SOP Class instance may be deleted on the SCP by a manual or automatic operation. This behavior is beyond the scope of the Standard.