How To Fix CLB652 - Unable to retrieve access token

SAP Error Message - Details

• Message type: E = Error

• Message class: CLB - SAIL: Common messages

• Message number: 652

• Message text: Unable to retrieve access token

What causes this issue?

When using three-legged OAuth an access token has to be used. If none is
available for the current user<(>,<)> a new token is requested from the
service provider. This request failed and did not return an access
token.

System Response

The function cannot be executed.

How to fix this error?

One reason might be that the service provider is offline for a short
period or some other connection problem. Try again later.

Procedure for System Administrators

Check if the credentials for three-legged OAuth authentication are met:
An OAuth client has to be registered with the service provider
This client must have a trusted relationship to this system using the
certificate from an SSF application named CLBOAU
When using a SAML assertion to authenticate<(>,<)> the user the SAML
provider has to be enabled on this system
The IDP named in the SAML2 transaction has to be made known in the
service provider settings.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CLB652 - Unable to retrieve access token ?

  The SAP error message CLB652: Unable to retrieve access token typically occurs in the context of SAP Cloud Platform or SAP Business Technology Platform when there is an issue with authentication or authorization while trying to access a service that requires an OAuth token.
  Causes:
  
  Invalid Credentials: The credentials (client ID, client secret) used to request the access token may be incorrect.
  Expired Token: If a refresh token is being used, it may have expired.
  Network Issues: There may be connectivity issues preventing the application from reaching the token service.
  
  Configuration Issues: The OAuth configuration in the SAP system may not be set up correctly, such as incorrect redirect URIs or scopes.
  Service Unavailability: The service that provides the access token may be down or experiencing issues.
  Authorization Issues: The user or application may not have the necessary permissions to request an access token.
  
  Solutions:
  
  Check Credentials: Verify that the client ID and client secret are correct and have