How To Fix WS684 - Simulation run is not supported for this function

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 684

• Message text: Simulation run is not supported for this function

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 WS684 - Simulation run is not supported for this function ?

  SAP Error Message:
  
  WS684 - Simulation run is not supported for this function
  
  Cause:
  This error occurs when you attempt to execute a simulation run for a function or transaction that does not support simulation mode. In SAP, certain functions or processes are designed to be executed only in actual run mode (real posting or processing) and do not have a simulation or test run capability. Trying to run these functions in simulation mode triggers the WS684 error.
  
  Explanation:
  
  Simulation run means executing a process without making any actual changes to the database or system, often used for testing or validation.
  Some SAP functions, especially those involving complex or critical business processes, do not allow simulation because the system cannot simulate the entire process accurately or because simulation could lead to inconsistent system states.
  The error WS684 explicitly indicates that the function you are trying to simulate does not support this mode.
  
  
  Solution:
  
  
  Run the function in actual mode:
  
  Instead of simulation, execute the function in the normal run mode where the system performs the real processing.
  
  
  Check documentation or SAP Notes:
  
  Verify if the function or transaction supports simulation. SAP documentation or relevant SAP Notes may clarify whether simulation is possible.
  
  
  Alternative testing methods:
  
  If you need to test the function without affecting production data, consider:
  
  Using a test or sandbox system.
  Using transaction variants or test data that minimize impact.
  Checking if there is a related function or transaction that supports simulation.
  
  
  
  Consult SAP Support or Development:
  
  If simulation is critical for your process, consult SAP support or your development team to explore if a custom solution or enhancement can enable simulation or provide a safe test environment.
  
  
  
  Related Information:
  
  This error is common in modules like Financial Accounting (FI), Controlling (CO), or Logistics (MM, SD) where certain postings or processes are strictly controlled.
  The message class is usually WS (Workflow or related functions), but the exact context depends on the transaction or function module you are using.
  Always ensure you understand the business impact before running functions in actual mode.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WS684 - Simulation run is not supported for this function
  
  
  Cause
  Attempting simulation on a function that does not support it
  
  
  Solution
  Run in actual mode; use test systems or data; consult SAP docs/notes
  
  
  Additional
  Check SAP Notes or support for function-specific info
  
  
  
  
  If you provide the exact transaction or function module where this error occurs, I can help you with more specific guidance.