Hello Russell, Thanks for Posting your queries. Please see responses below: For First query - SYS_ID is a unique identifier, so no custom description is required. It is generated by system itself. Using Repair option, allow the user to create unique SYS_ID and avoid duplicate ones. Please refer one discussion thread done earlier on same context. You may also check in help file menu for repairing SYS_ID's using catalog editor at catalog entry level. You need to add MATERIAL & MAT GRADE in catalog and do the repair. Secondly in specgen, you can chose multiple entries for material and MAT Grade to allow it to place inside OpenPlant Modeler. See image below. HTH -Regards | Rahul Kumar
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