CC.2.2 Request UPS Cancel (N-ACTION)
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### CC.2.2 Request UPS Cancel (N-ACTION)

This operation allows an SCU that does not control a given Unified Procedure Step (UPS) instance to request to the SCP that the instance be canceled. This operation shall be invoked by the SCU through the DIMSE N-ACTION Service.

#### CC.2.2.1 Action Information

DICOM AEs that claim conformance to the UPS Push SOP Class as an SCU or an SCP shall support the Action Types and Action Information as specified in Table CC.2.2-1. DICOM AEs that claim conformance to the UPS Watch SOP Class as an SCP or claim conformance to the UPS Watch SOP Class as an SCU and choose to implement Request UPS Cancel shall support the Action Types and Action Information as specified in Table CC.2.2-1.

Table CC.2.2-1. Request UPS Cancel - Action Information

Action Type Name | Action Type ID | Attribute Name | Tag | Requirement Type SCU/SCP
--- | --- | --- | --- | ---
Request UPS Cancel | 2 | Reason For Cancellation | (0074,1238) | 3/1
Procedure Step Discontinuation Reason Code Sequence | (0074,100e) | 3/1
>Code Value | (0008,0100) | 1/1
>Coding Scheme Designator | (0008,0102) | 1/1
>Coding Scheme Version | (0008,0103) | 1C/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) | 1/1
Contact URI | (0074,100a) | 3/1
Contact Display Name | (0074,100c) | 3/1

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