The ItemType is not available in the list during a 'Save As New Item Type' command from NX.
This Item Type is available in Teamcenter when the user goes to 'File-->New-->Item', but not when the NX user goes to 'File-->Save-->Save As New Item Type'.
Solution
ItemTypes that have required properties with no initial value will not be available in the NX 'Save As New Item Type' list. This is as designed. NX cannot use those ItemTypes, as they would create Items that may have required properties that are <empty> or null.
To workaround the issue, set an initial value for all required properties for this needed ItemType in BMIDE. Then save the template and deploy. If the ItemType has a default initial value for all required properties and is available to the user's group/role, it should start being available in the Item Type list in NX for the 'Save As New Item Type' command.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: NXMANAGER
Version: V1926
Function: FILE_SAVE_AS
Ref: 001-9514200