Trello Integration: Why I can only map 6 fields?

I am trying to find a way that when someone submits a form, it goes to a Trello card. If I can't map more fields, then is there no way I can edit the integration so that the pdf of the submission is uploaded to the board? for each submission?

This form is a design briefing form that people complete to get work done. When it comes in via email at the moment, I then add it to my designer's Trello board. I was hoping to automate this.

Is it possible to attach the pdf of the submission when someone submits it? Because I don't think the mapping fields is going to work if I can only map 6 fields :(

We are sorry for the inconvenience you have.

Our Trello integration is a brand new feature. Besides, I can say that the purpose of this integration is not saving whole form submissions' fields on a Trello Card for now. The purpose of this integration is creating bug report cards on the Trello.

Why Trello integration contains 6 fields to integrate? When creating a Trello card, Trello needs only those 6 information as the following: Card Name, Card Labels, Attachments, Description, Members and Due Date as you can see the screenshots below:

So that, as you can see the screenshot above, I have created that Trello card by submitting a form. It is not possible to integrate whole form fields with the Trello card fields. It is not suitable.

If you want to save each submission as a PDF, you can use a DropBox or Google Drive integration.

I hope this helps. If you have any questions, let us know. 

Thank you