how can i do client credential oauth step by step?

[#1]

I have got the access token and now trying to validate. I am getting an error like below in postman:

{ "fault": { "faultstring": "Invalid API call as no apiproduct match found", "detail": { "errorcode": "keymanagement.service.InvalidAPICallAsNoApiProductMatchFound" } } }

Kindly help me to understand this as i am very new to APIGEE and trying to learn it from last week.

Thanks in advance.

[DChiesa · Accepted solution]

There is a guided exercise here:

Securing APIs with OAuth - Client Credentials