Change the amount paid per month of paypal recurring payment account

The situation is like this,

I have three kind of user registration on my site

1. $20/month
2. $30/month
3. $40/month

now, suppose a user registers with $30 amount and takes the 2nd registration... next 2 mon开发者_JAVA技巧ths his $30 per month were deducted as per the recurring payment of paypal...working fine .:)

Now, he wants to upgrade to $40 i.e 3rd membership , so from next month his amount deduction should be $40... How to update paypal for this change in amount..

I DON'T WANT TO GO TO PAYPAL'S SITE FOR THIS...

Is there any API for this purpose....... Any help would be appreciated....

First off, Paypal's API is not a simple or easy thing to use, but what you're asking can be done. It is simply a matter of canceling the existing 'recurring payment profile' via the API, and starting another recurring payment that ends at the same time.

The API methods themselves change depending on which system you are using. At my company, we use Paypal Website Payments Pro. This has a specific set of functions to perform actions. Without knowing which system you use, however, we can't give any further advice.

The below link shows a number of the methods for the different Paypal API's. Do your research, and try to ask specific questions. :)

https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/howto_api_reference

Daniel Moniz

I was able to do this, but first, this caveat from PayPal should be noted:

Note: For recurring payments with Express Checkout, the payment amount can be increased by no more than 20% every 180 days (starting when the profile is created).

Since I'm not using Express Checkout, POSTing this worked for me to change an amount from $75 to $200 (the credentials are fake):

TRXTYPE=R&TENDER=C&PARTNER=PayPal&VENDOR=Acme&USER=Acme&PWD=a1b2c3d4 &ACTION=M&AMT=200.00&ORIGPROFILEID=RP0000001234

The other caveat is that this is only one of I-don't-know-how-many APIs and I-don't-know-how-many-types-of-accounts (in this case Payflow) that PayPal has, and I don't know if something similar works for all of them. The above code is actually copied almost verbatim (credentials and amount changed) from https://developer.paypal.com/docs/classic/payflow/recurring-billing/.