We utilized PayPal APIs to integrate our site with paypal payment gateway in paypal test environment, it works very well. Now we want to integrate our site into real PayPal gateway, but we are not sure how to configure real paypal_sdk_client.properties file.
I login into my paypal account and generate related credential, such as API Username, API Password ,Signature, and then put them in paypal_sdk_client.properties. but still doesn't work. Anyone can help me out? Thanks in advance.