How To Fix SOAUTH2042 - No authorization for some OAuth 2.0 tokens (analyze with ST01).

SAP Error Message - Details

• Message type: E = Error

• Message class: SOAUTH2 - OAuth2 Messages

• Message number: 042

• Message text: No authorization for some OAuth 2.0 tokens (analyze with ST01).

What causes this issue?

The system performs authorization checks when starting the token
revocation and before display and deletion of OAuth 2.0 Token Contexts.
When starting the token revocation in administrator mode (transaction:
SOAUTH2_REVOKE_ADM) the system checks if the user has the authorization
S_OA2_OBJ with the object <ZH>REVOCATION</>. (If the user does not have
this authorization, the system will change to the standard behaviour of
transaction SOAUTH2_REVOCATION. I.e. the user will only see their own
tokens.)
Before <ZH>display </>of a token context, the system checks if the
logged on user has the authorization to <ZH>display </>the user class
and the OAuth 2.0 client assigned to this token context. In detail the
following authorization objects will be checked:
S_USR_GRP (with the class of the assigned user and activity <ZH>03</>)
for the user group
S_OA2_CL (with the assigned OAuth 2.0 client and activity <ZH>03</>) for
the OAuth client

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Before <ZH>deletion </>of a token context, the system will check if the
logged on user has the authorizations <ZH>change </>for the OAuth 2.0
client and <ZH>unassign </>for the user class assigned to this token
context . In detail the following authorization objects will be checked:
S_USR_GRP (with the class of the assigned user and activity <ZH>22</>)
for the user group
S_OA2_CL (with the assigned OAuth 2.0 client and activity <ZH>02</>) for
the OAuth client

System Response

If the authorization check for at least one token context failed the
system will raise this message.
If the authorization check for either client or user group display
failed, the particular token context won't be displayed.
If the authorization check for either client or user group change
failed, the particular token context won't be revoked.

How to fix this error?

Turn on the authorization trace in transaction SE01 and repeat your
action. You will then see in the trace, which authorization checks
failed in detail, i.e. which token contexts were filtered from display
resp. were not revoked.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SOAUTH2042 - No authorization for some OAuth 2.0 tokens (analyze with ST01). ?

  The SAP error message SOAUTH2042 indicates that there is a lack of authorization for certain OAuth 2.0 tokens. This error typically arises when a user or service tries to access resources or perform actions that require specific permissions, but the necessary authorizations are not granted.
  Cause:
  
  Missing Authorizations: The user or service account does not have the required authorizations to access the requested resource or perform the action.
  Incorrect Token Scope: The OAuth 2.0 token may not have the correct scopes defined, which are necessary for the requested operation.
  Configuration Issues: There may be misconfigurations in the OAuth 2.0 setup, such as incorrect client IDs, secrets, or redirect URIs.
  Role Assignment: The roles assigned to the user or service account may not include the necessary permissions for the OAuth 2.0 operations.
  
  Solution:
  
  
  Check Authorizations:
  
  Use transaction code PFCG to review the roles assigned to the user or service account.
  Ensure that the necessary authorizations for OAuth 2.0 operations are included in the roles.
  
  
  
  Analyze with ST01:
  
  Use transaction code ST01 to activate the authorization trace.
  Reproduce the error to capture the authorization checks that are failing.
  Analyze the trace results to identify which specific authorizations are missing.
  
  
  
  Review Token Scopes:
  
  Ensure that the OAuth 2.0 token being used has the correct scopes for the operations being performed.
  If necessary, adjust the scope settings in the OAuth 2.0 configuration.
  
  
  
  Configuration Review:
  
  Verify the OAuth 2.0 client configuration in the SAP system.
  Check the client ID, client secret, and redirect URIs to ensure they are correctly set up.
  
  
  
  Role Maintenance:
  
  If roles need to be adjusted, use transaction code PFCG to modify the roles and add the necessary authorizations.
  After making changes, ensure to regenerate the profile and perform a user comparison.
  
  
  
  Testing:
  
  After making the necessary changes, test the OAuth 2.0 token again to ensure that the authorization error is resolved.
  
  
  
  Related Information:
  
  OAuth 2.0 Overview: Understanding the OAuth 2.0 framework and how it works within SAP can help in troubleshooting authorization issues.
  SAP Documentation: Refer to SAP Help Portal for detailed documentation on OAuth 2.0 configuration and authorization management.
  Security Audit Logs: Review security audit logs for additional insights into authorization failures.
  
  By following these steps, you should be able to identify and resolve the authorization issues related to the SOAUTH2042 error message in SAP.