CC.2.4 Report a Change in UPS Status (N-EVENT-REPORT)
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### CC.2.4 Report a Change in UPS Status (N-EVENT-REPORT)

This operation allows an SCP to notify an SCU of a change in state of a UPS instance or a change in state of the SCP itself. This operation shall be invoked by the SCP through the DIMSE N-EVENT-REPORT Service.

#### CC.2.4.1 Event Report Information

DICOM AEs that claim conformance to the UPS Event SOP Class as an SCU and/or an SCP shall support the Event Type IDs and Event Report Attributes as specified in Table CC.2.4-1.

Table CC.2.4-1. Report a Change in UPS Status - Event Report Information

Event Type Name | Event Type ID | Attribute Name | Tag | Req. Type SCU/SCP
--- | --- | --- | --- | ---
UPS State Report | 1 | Procedure Step State | (0074,1000) | -/1
Input Readiness State | (0040,4041) | -/1
Reason For Cancellation | (0074,1238) | -/3
Procedure Step Discontinuation Reason Code Sequence | (0074,100e) | -/3
>Code Value | (0008,0100) | -/1
>Coding Scheme Designator | (0008,0102) | -/1
>Coding Scheme Version | (0008,0103) | -/1C Required if the value of Coding Scheme Designator (0008,0102) is not sufficient to identify the Code Value (0008,0100) unambiguously
>Code Meaning | (0008,0104) | -/1
UPS Cancel Requested | 2 | Requesting AE | (0074,1236) | -/1
Reason For Cancellation | (0074,1238) | -/1C Required if provided in the triggering N-ACTION
Procedure Step Discontinuation Reason Code Sequence | (0074,100e) | -/1C Required if provided in the triggering N-ACTION
>Code Value | (0008,0100) | -/1
>Coding Scheme Designator | (0008,0102) | -/1
>Coding Scheme Version | (0008,0103) | -/1C Required if the value of Coding Scheme Designator (0008,0102) is not sufficient to identify the Code Value (0008,0100) unambiguously
>Code Meaning | (0008,0104) | -/1
Contact URI | (0074,100a) | -/1C Required if provided in the triggering N-ACTION
Contact Display Name | (0074,100c) | -/1C Required if provided in the triggering N-ACTION
UPS Progress Report | 3 | Progress Information Sequence | (0074,1002) | -/1
>Procedure Step Progress | (0074,1004) | -/3
>Procedure Step Progress Description | (0074,1006) | -/3
>Procedure Step Communications URI Sequence | (0074,1008) | -/3
>>Contact URI | (0074,100a) | -/1
>>Contact Display Name | (0074,100c) | -/3
SCP Status Change | 4 | SCP Status | (0074,1242) | -/1
Subscription List Status | (0074,1244) | -/1
Unified Procedure Step List Status | (0074,1246) | -/1

### Note

The meanings of the Progress Information Attribute values in the context of a specific task are undefined, and the values may be obsolete when the UPS has moved to the COMPLETED or CANCELED state.

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