Page History

Onetrail uses de UNSPSC standard for it's classification.   An overview can be found here. From this list you have to pick the UNSPSC used codes V.10.    

Yes, that's possible. Watch the tutorial explaining how to do this.

Yes, that's possible. See part 2 - Adjusting the translation table.

As long as new items have the same brand, belong to the same classification, have the same VAT codes or UOM as your previously product file, you don't need to match new records.

The Product Manager archives previously made matches in a translation table and automatically applies them to new products.

You still have to match new brands, classifications, VAT codes or UOM's.

Rejected lines are due to errors in your product data file; wrong characters, too many positions, spaces, etc. etc. 
    
When you get rejected lines, you should correct these errors in your product data file and upload your corrected file again.
    
The right data, example notation and additional information can be found in the Product Manager - Product data file guidelines

You get conversion failures because some of your brands, classifications, VAT Codes or UOM Codes still have to be matched. See here the explanation of how to do this.