Processes form question answers, employee data, and employer data to produce a pdf and tax parameters

The fillPdf endpoint accepts a json object containing employee information, employer information, and the answers to the form questions. The endpoint validates and processes the data and returns a completed PDF in base 64 format along with the relevant tax parameters for the form. Validation is done using the regular expressions provided in the question sets and validation of question dependencies is performed. For more information, see fill pdf.