PayPal Community

I have a set of NVP API credentials on the live site that were created 2012, apparently. I've tried to use these using Postman in a SetExpressCheckout call, but get the error message "Merchant not enabled for reference transactions". Why am I getting this error? I understood by having these credentials (do they expire?) reference transactions should be enabled. ... View more

Hi @gotbaseball  You are only able to have either an API Certificate or an API Signature at any given moment. If you are seeing an API Certificate, you will need to revoke that certificate in order to request a Signature.   Please be aware that if you revoke a certificate it will break any current integration that is using that certificate. Please make sure that you do not need the certificate before revoking.   Thanks, Rob - PayPal MTS ... View more