The following fields have a maximum length of 250 characters
POST /v1/user
first_name, last_name, contact_number, business_name
POST /v1/checkout
first_name, last_name, contact_number, business_name, reference_id
txn_description (has a maximum length of 1250 characters)
POST /v1/escrow
reference_id
POST /v2/kyb
address_line_1, address_line_2, city, state, zip_code, mobile_number