How To Fix WA170 - No authorization to execute using RFC

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 170

• Message text: No authorization to execute using RFC

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WA170 - No authorization to execute using RFC ?

  SAP Error Message:
  
  WA170 - No authorization to execute using RFC
  
  Cause:
  The error WA170 occurs when a user or a program tries to execute a Remote Function Call (RFC) but lacks the necessary authorizations. Specifically, the user does not have the required permissions to call the RFC-enabled function module or to access the target system via RFC.
  This typically happens because:
  
  The user’s SAP authorization profile does not include the required RFC authorizations.
  The authorization object S_RFC (which controls RFC execution) is missing or incomplete in the user’s roles.
  The RFC destination is configured correctly, but the user assigned to the RFC connection lacks proper authorizations.
  The function module being called is protected by additional authorization checks that the user does not meet.
  
  
  Solution:
  To resolve the WA170 error, follow these steps:
  
  
  Check the User Authorizations:
  
  Identify the user ID under which the RFC call is being made.
  Use transaction SU53 immediately after the error occurs to see the missing authorization check.
  Alternatively, check the authorization trace using transaction ST01 (Authorization Trace) for the user.
  
  
  
  Verify Authorization Object S_RFC:
  
  Ensure the user has the S_RFC authorization object with appropriate values:
  
  RFC_TYPE = 'FUGR' (Function Group) or 'FUNC' (Function Module)
  FUNCNAME = the name of the function module or '*' for all
  ACTVT = '16' (Execute)
  
  
  This authorization allows the user to execute the RFC-enabled function module.
  
  
  
  Check the RFC Destination User:
  
  If the RFC call is made via an RFC destination (transaction SM59), check the user assigned to the RFC destination.
  Ensure that this user has the necessary authorizations as above.
  
  
  
  Adjust Roles and Profiles:
  
  Add or adjust the roles assigned to the user to include the required S_RFC authorizations.
  If necessary, create a custom role with the required S_RFC authorizations and assign it to the user.
  
  
  
  Check Function Module Authorization Checks:
  
  Some function modules have additional authorization checks inside their code.
  Review the function module code or documentation to identify if additional authorizations are required.
  
  
  
  Test the RFC Call:
  
  After adjusting authorizations, test the RFC call again.
  Use transaction SE37 to test the function module remotely or SM59 to test the RFC destination.
  
  
  
  
  Related Information:
  
  
  Authorization Object:  
  
  S_RFC — Controls execution of RFC-enabled function modules.
  
  
  
  Transactions:
  
  SU53 — Display authorization check failures.
  ST01 — Authorization trace.
  SM59 — RFC destinations.
  SE37 — Function module test.
  PFCG — Role maintenance.
  
  
  
  Notes and Documentation:
  
  SAP Note 000170 (example) or similar notes may provide additional guidance.
  SAP Help Portal on RFC and authorizations.
  
  
  
  
  Summary:
  The WA170 error means the user lacks authorization to execute an RFC call. Fixing it involves ensuring the user (or the RFC destination user) has the correct S_RFC authorizations and any additional required permissions to execute the specific function module remotely. Use SU53 and ST01 to diagnose missing authorizations and adjust roles accordingly.