For sending a file with the multi file form-data REST (post) service it is often necessary to send metadata of this file in the same call. This can only be send in a string.
It would be great to be able to send this info in a JSON part in this multipart post together with the filedoc. This will enable the import mapping and export mapping functionalities for this metadata. The metadata can be in some cases quite extensive. An if the metadata is send in a string it can be very cumbersome to compose the string and for the receiving part to dissect this same string.