@Ananya Dixith You should be able to use a model that is trained with form recognizer v2.1 API when you connect your form recognizer resource by adding the endpoint URL and keys. This is part of the steps mentioned for creation of automation flow in the form-recognizer logic apps documentation.
In this case you might be using the v3.0 API from the studio and it might be incompatible with this connector in logic apps.
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