Upload a Mixed Document file to a Book for processing.

A Mixed Document is a sequence of pages that have not yet been classified. The sequence can contain one or many Form Types. There can be multiple Forms of the same Form Type. An example would be a document containing two W2's, two Paystubs, and one Bank Statement.

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Content-Type

This is an Upload endpoint and hence requires a payload of Content-Type multipart/form-data. For details on how to encode request bodies in the platform of your choice, refer to our guide on multipart/form-data Payloads.

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