Thanks for the details. Currently, you can only train using one or the other. There's no way to modify prebuilt models, or combine prebuilt and custom models. However, you can create composed model from custom models. There are also techniques that can be applied to improve custom model performance. Additional suggestions are provided on this thread.
Form Recognizer - General Document results improvement
Sathish Sagadevan
21
Reputation points
Lets say the result from General Document is 90% accurate for our usage after we analyze the result from general document. We have also trained the same document (5 templates of same document using Custom models in the same subscription) for the 10% of the fields for accuracy.
If we make a call with General Document again after this training. Will the Analyze document would be able to give us the additional Key Value pairs from the Custom models within same subscription.