Return Code 403 - Forbidden (Access Denied) on several API's

[CiscoAPI]

Hello, 

I've got some experience in using API's but I'm new to the Cisco API's. 

According to Cisco my account has the correct permissions using CCW-R (we're PSS) and Service API's. We registered the API's we want to use to two apps due to different auth methods - one for the CCW-R and one for Service API's. 

While some API's are working fine (e.g. EoX and Advisories) I've goth 'Access Denied' on other API's. For example: 

GET https://api.cisco.com/sn2info/v2/coverage/status/serial_numbers/FCW2323G0TV
GET https://api.cisco.com/product/v1/information/product_ids/UBR10012,ASR1001
GET https://apx.cisco.com/cs/api/v1/customer-info/customer-details
GET https://apx.cisco.com/cs/api/v1/customer-info/customer-details
POST https://api-test.cisco.com/ccw/renewals/api/v1.0/search/contractSummary

Can someone please give me a hint if I'm doing it wrong? 

Here are the API's registered for the service (please ignore, that the CCW-R is added as well):

The token request is working fine (using it for EoX and Advisories as well because it's the same app):

My request header is looking like the following:

According to the API and their documentation I add JSON information to the body. For example the customerID when trying to receive respective information. 

The response is always the same: 

I really appreciate your help! Thanks, David.

[CiscoAPI · Accepted solution]

Ok, yesterday I had a call with Cisco and the problem ist solved. 

1) My permissions were insufficient and 

2) I did not know, that api* und apx* URL's are behind different gateways and need different authentication / client credentials due to different applications in use. 

api* URL is behind Mashery GW and uses the application(s) on https://apiconsole.cisco.com while

apx* URL is behind Mulesoft GW and uses the application(s) on https://anypoint.mulesoft.com/apiplatform/apx/#/portals

With having both in place and the correct permissions granted API access is working for CCW-R and Service APIs.