The N-CREATE-RQ Message contains fields as defined in Table 10.3-9. Each field shall conform to DICOM encoding and Value Representation as defined in PS 3.5. Fields are required as specified in the N-CREATE service definition unless otherwise noted in Table 10.3-9. Fields not specified in the N-CREATE service definition but present in Table 10.3-9 are required by the DIMSE-N protocol.


Message Field Tag VR VM Description of Field
Command Group Length (0000,0000) UL 1 The even number of bytes from the end of the value field to the beginning of the next group.
Affected SOP Class UID (0000,0002) UI 1 SOP Class UID of the SOP Instance to be created.
Command Field (0000,0100) US 1 This field distinguishes the DIMSE-N operation conveyed by this Message. The value of this field shall be set to 0140H for the N-CREATE-RQ Message.
Message ID (0000,0110) US 1 Implementation-specific value which distinguishes this Message from other Messages.
Command Data Set Type (0000,0800) US 1 This field indicates that if a Data Set is present in the Message. This field shall be set to the value of 0101H if no Data Set is present; any other value indicates a Data Set is included in the Message.
Affected SOP Instance UID (0000,1000) UI 1 Contains the UID of the SOP Instance to be created.
Attribute List (no tag) This field is encoded as a Data Set. One Data Element is encoded for each Attribute and Attribute Value applicable to the operation.

Note: The permitted contents of Attribute List, encoded as a series of Data Elements, are defined in the Information Object Definition (PS 3.3) and Service Class Specifications (PS 3.4).