How to utilize the URL query string

Paperless Transactions Secure forms utilize URL Query String variables to be able to prefill most of the form elements via a link or form submission. These methods are detailed below.

Here is a list of the variables that can be prefilled using this method.
Optional Query String parameters
c1 custom field #1
c2 custom field #2
c3 custom field #3
c4 custom field #4
c5 custom field #5
c6 custom field #6
c7 custom field #7
c8 custom field #8
c9 custom field #9
c10 custom field #10
….continue to c30 – custom field #30
a Amount
r Recurring (true / false)
f Frequency ( 52 / 24 / 12 / 4 / 1 )
s Start Date ( any valid date, ie: 1 / 1 / 2010)
e End Date ( any valid date, id: 5 / 1 / 2010)
p Payment Method ( ach / cc )
fn First Name
ln Last Name
sa Street Address
ci City
st State
zi Zip
To begin prefilling you must place a question mark at the end of the page URL
After the question mark, you can begin placing the variables and what you would like them filled in with always
separating each variable with an ampersand (&).
After loading, the page will repost and the link will appear in the address bar as normal