# Payflow Gateway FAQs (/api/nvp-soap/payflow/integration-guide/reference/faq)



You can find more Payflow frequently asked questions [here](https://www.paypal.com/webapps/mpp/payflow-faq). The following FAQs are specific to Payflow integration details.

## How do I determine which version of the Payflow Gateway SDK I have? [#how-do-i-determine-which-version-of-the-payflow-gateway-sdk-i-have]

See this Merchant Technical Support (MTS) [knowledge base article](https://www.paypal.com/us/smarthelp/article/how-do-i-implement-paypals-payflow-pro-and-website-payments-pro-payflow-edition-https-interface-ts1348) to determine your Payflow SDK version.

## How do I contact Payflow Support? [#how-do-i-contact-payflow-support]

Go to [https://manager.paypal.com/jsp/common/contactUs.jsp](https://manager.paypal.com/jsp/common/contactUs.jsp) to obtain the Payflow Support phone number for your region.