@Soumya Zacharia Are you looking to train a prebuilt invoice document model? If yes, then any prebuilt model cannot be trained with custom documents. You will have to use the custom model option and train a model from scratch. Pre-built models are trained by Microsoft using common formats that are used in different countries. If you are seeing any document that is not being analyzed correctly, I would recommend passing the document to the document intelligence team through the feedback option in the studio from the top right-hand corner. I hope this helps!!
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