Hello, wait a long time, I'm glad to be able to answer your questions, ukey invoicing catering services assign code method / steps:1. Enter the VAT invoicing software tax UKey version, click on the invoice to fill, enter the fill page, double-click to select the code.2. Click on the code category, add new commodities, and then selected goods, and then click on the intelligent assignment code.3. The page jumps, click on the assign code can be