Authentication failing with PayPal Checkout Server Integration

[WayneSmallman]

Hi, I've followed the guide for implementing the PayPal Checkout Server Integration and it's failing via Node on the create payment endpoint with the message:

Authentication failed due to invalid authentication credentials or a missing Authorization header.

Thing is, there's no mention of headers anywhere in the guide. However, I am passing the client ID and secret, as instructed by the guide.

[fromage9747]

I am also experiencing this issue.

I am using NestJS which is pretty much NodeJS.

When I create the order, it all works fine and then when I want to capture/make payment, I get "Authentication failed due to invalid authentication credentials or a missing Authorization header".

Pretty confident that I am doing everything correctly as if there was a problem with authentication, I doubt that the "Create Order" API would work. 

[fromage9747]

As always... Whenever I ask a question about a problem I am facing, I solve my problem.

The issue here is that PAYPAL_API + '/v2/checkout/orders/' + payment_id + '/capture' still requires a post body request even though the documentation does not state it.

I used the same request for creating the order with one difference.  I changed the INTENT to "SALE".

Everything went through and it was successfully processed.