Paypal定期付款IPN确认

Question

I have encountered a problem with Paypal recurring payments. CreateRecurringPaymentsProfile() returns ID of created profile (ProfileID). At the same time, I receive the following confirmation on IPN url:

payment_cycle - Daily
txn_type - recurring_payment_profile_ 
created
last_name - User
next_payment_date - 03:00:00 Oct 06, 2011 PDT
residence_country - US
initial_payment_amount - 0.00
currency_code - USD
time_created - 23:21:02 Oct 05, 2011 PDT
verify_sign - ...
period_type -  Regular
payer_status - verified
test_ipn - 1
tax - 0.00
payer_email - ...
first_name - Test
receiver_email - ...
payer_id - ...
product_type - 1
shipping - 0.00
amount_per_cycle - 20.00
profile_status - Active
charset - windows-1252
notify_version - 3.4
amount - 20.00
outstanding_balance - 0.00
---------->recurring_payment_id - I-6EFKVB5FXRGH
product_name - Ultimate Account
ipn_track_id - ...

Obviously, ProfileID and recurring_payment_id are equal. After this, a confirmation about the payment is received:

mc_gross - 20.00
outstanding_balance - 0.00
period_type -  Regular
next_payment_date - 03:00:00 Oct 07, 2011 PDT
protection_eligibility - Ineligible
payment_cycle - Daily
tax - 0.00
payer_id - WR942TMLKNKZE
payment_date - 04:38:37 Oct 06, 2011 PDT
payment_status - Completed
product_name - Ultimate Account
charset - windows-1252
---------->recurring_payment_id - I-5S42CVRD6HPC
first_name - Test
mc_fee - 0.88
notify_version - 3.4
amount_per_cycle - 20.00
payer_status - verified
currency_code - USD
business - ...
verify_sign - ...
payer_email - ...
initial_payment_amount - 0.00
profile_status - Active
amount - 20.00
txn_id - 2XB154738E303273C
payment_type - instant
last_name - User
receiver_email - ...
payment_fee - 0.88
receiver_id - ...
txn_type - recurring_payment
mc_currency - USD
residence_country - US
test_ipn - 1
transaction_subject -
payment_gross - 20.00
shipping - 0.00
product_type - 1
time_created - 03:32:45 Sep 29, 2011 PDT
ipn_track_id - ...

These 3 values: ProfileID in return of CreateRecurringPaymentsProfile(); recurring_payment_id in recurring_payment_profile_created; recurring_payment_id in recurring_payment - should be the same. (as it seems that there's no other way to properly identify the payment for this specific subscription) Also, recurring_payment (on IPN) is being sent by Paypal multiple times and every time recurring_payment_id is different.

Should I use recurring_payment_id to identify the payment for specific subscription or there's another properly way to identify it?

Answer 1

Profile ID = recurring_payment_id. If recurring_payment_id is different, we're talking about a different ProfileID (in other words: a different recurring payment profile).