Android app with a form for collect data

Overview
Android app developed with Android Studio to collect data with a user form. This data must be saved to local CSV and also sent to a web service.
This data is also used to make a PDF, which must be sent to a web server and to a email address.

User form
The data to collect is:
- ID: ID is automatically generated by calling a web service, that returns a numeric code.
- Contract number: Text, max 20 characters. Contract number must be checked against a web service. If data is returned, it is used to fill some of the following fields.
- Name: text, max 100 charaters, mandatory
- Identification number: text, max 12 characters, mandatory
- Email: text, max 100 characters
- Phone number 1, Phone number 2, Phone number 3: text, max 20 charaters. Phone number 1 is mandatory.
- Address: text, max 100 characters, mandatory
- Zip code: text, max 5 numeric characters
- Type: Selector, options Type 1 / Type 2 (must select only one)
- Is Active: Checkbox or similar
- List of elements: A list of registers, each register must have "Element name" (text, max 200 characters) and "Element price" (decimal).
- Sign: The customer can sign the form, and this sign must be saved as JPG and added to the PDF.
The form can be saved or cancelled. If saved, first must check that mandatory fields are filled.

Save data in local CSV file and send data to web service
Make a Json with the data, save this Json to a text file, and post it to a REST web service.

Make a PDF
Make a PDF, similar to the attached image with the data. The file must be saved to local (using the ID as file name), sent to the email address collected in the user form and to a web server by FTP.

Other requirements
I will need several deliveries of the app with the source code, to check things are going well.