The ics_paypal_update_agreement service cancels a billing agreement.
When you request ics_paypal_update_agreement, you must include the following fields in the request:
nics_applications
nmerchant_id
nmerchant_ref_number
npaypal_billing_agreement_id
npaypal_billing_agreement_status
Additional fields are optional. The required and optional fields are described in API Fields.