A clone log is used to import the data.
In the clone log, the user has specified something unique for DB_PART_NAME and DB_PART_DESC.
However during import, it is trying to use the ItemID for these attributes.
Solution
In the clone log, for each entry, the user needs to change:
&LOG Naming_Technique: DEFAULT_NAMING
To:
&LOG Naming_Technique: USER_NAME
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: NXMANAGER
Version: V1926
Function: CLONE_IMPORT
Ref: 001-9419350