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PayPal Community Q&A - March 15, 2019 - Closed


PayPal Community Q&A - March 15, 2019 - Closed

Hey everybody!


Join the PayPal Community Forums moderation team in our semi-weekly Community Q&A session on Friday, March 15th, from 4-5pm GMT.


Our moderator staff will be here to answer your questions regarding PayPal. This thread will remain locked until the session is open, so if you have a question you'd like to see answered by the community before then, please feel free to post a topic by clicking on "Post a Topic" and selecting the appropriate board.  As always, PayPal customer service can be reached by clicking on "Contact Us" and selecting help via phone or email.


How Community Q&A session works:


The session opens at 4pm GMT. Once it is open, PayPal Community members may participate and ask questions by using the "Reply to topic" button.


In order to post a question, you must be a PayPal Community member. If you'd like email updates on the Q&A, click the "Options" menu and select Subscribe. Smiley Happy 


During the Q&A session, PayPal Moderators will answer general PayPal questions in real-time. 


At 5pm GMT, the session will close and lock. Any questions that have not yet been responded to by a moderator or employee will receive a response within the following hour.


Please feel free to RSVP to the Q&A session by clicking "Me too" at the bottom of this post.  See you then!




Re: PayPal Community Q&A - March 15, 2019 - Open

Hi everybody!


Today's Community Q&A is now open and unlocked! 


Our moderator staff will be available for the next hour to answer your questions about PayPal. We do ask that posts follow the PayPal Community Forum User Agreement and the Forum Guidelines.


Once the session is over, this thread will be locked again, but you will be able to view the content in the forums.  This event is a regular feature every Wednesday from 1pm to 2pm PT and Friday from 4pm to 5pm GMT, so if you missed us this time, please feel free to stop by in the future! 




If this post or any other was helpful, please enrich the community by giving kudos or accepting it as a solution.

Re: PayPal Community Q&A - March 15, 2019 - Open

Hi @PayPal_Martin ,

I implemented the payment buttons as described in the docs and even had a detailed view at IPN / PDT functionality.

My questions are:

  1. What is the best practice to send a unique identifier (which I generated on my server side) to Paypal which I always get back (regardless if PDT or IPN) to ensure I can identify the paying user?
    Is this the "custom" (cm) field or is there a better field to use (maybe something like e.g. token, hash)?

  2. In the designing process of a button I added some variables - but these variables are neither shown in HTML-Code of the button nor are they sent.
    What did I do wrong and what do I need to change?

Thanks and best regards


Re: PayPal Community Q&A - March 15, 2019 - Open

Hi @Eric_Haas 


Thank you for joining the Q&A session today. I'm afraid that your questions are a little out of the depth of the moderators who field the questions in this Q&A. Please post in the Merchant Integration Technical Support Community, to allow the people with that kind of expertise to get a chance in providing answers. You can also request support from our Technical Support team here. You can sign up on this portal to request specific assistance with your issues. 






Re: PayPal Community Q&A - March 15, 2019 - Open

Hi @PayPal_Martin,

thanks for the information - wasn't aware this was out of scope for this Q&A. 😉

Anyway, I'll use your links to ask the guys over there.

Thanks and have a great weekend