I am extracting lead data using the 'Get Multiple Leads by List Id' REST API with GET method. However there are more that 650 fields that are required to be fetched. If I pass a comma separated list of all the fields as the URL param and make a GET request, the api returns a 414 Request-URI Too Long error.
Is there a way to fetch all the fields (more that 650) from marketo using the REST API? The api does not support POST method.
Error response in POSTMAN:
<html> <head> <title>414 Request-URI Too Large</title> </head> <body bgcolor="white"> <center> <h1>414 Request-URI Too Large</h1> </center> <hr> <center>nginx</center> </body> </html>