Client Authentication failed - Switch to Live Mode

[extraMusic]

Hi,

i have build a simple shop and want to use my PayPal Plus Account, so users can pay per PayPal, Credi Card and Bank Account.

In Sandbox Mode everything works perfect, but when i switch to Live Mode an use the Live credentials for my app i got this:

{"error":"invalid_client","error_description":"Client Authentication failed"}

I have tried 3 different Apps now, but nothing worked.

Do i have to make an review process or something like that to use it in Live Mode?

[fresonmx]

Did you switch the environment to production?

paypal.Button.render({
env: 'production', 

client: {
sandbox: 'XXXX',
production: 'XXX'    
},

[MTS_Justin]

Hello,

As @fresonmx mentioned, the most common cause of this issue is that your submitting the REST API request to sandbox endpoint instead of a production one.

For example - Payments API

// SANDBOX
https://api.sandbox.paypal.com/v1/payments/payment

// PRODUCTION
https://api.paypal.com/v1/payments/payment