How To Fix CBGL00639 - Simulation completed; no changes made

SAP Error Message - Details

• Message type: E = Error

• Message class: CBGL00 - GLM: Standard Messages

• Message number: 639

• Message text: Simulation completed; no changes made

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CBGL00639 - Simulation completed; no changes made ?

  The SAP error message CBGL00639 indicates that a simulation was executed, but no changes were made to the data. This message typically arises in the context of financial postings or adjustments where a simulation is run to preview the effects of a transaction without actually committing any changes to the database.
  Cause:
  
  No Changes Detected: The most common reason for this message is that the simulation did not result in any changes to the data. This can happen if the input data is identical to the existing data, or if the transaction being simulated does not affect any records.
  Incorrect Parameters: The parameters or criteria used in the simulation may not be set correctly, leading to no changes being identified.
  Data Locking: If the data being simulated is locked by another process, the simulation may not be able to make any changes.
  Business Logic: The business rules defined in the system may dictate that no changes are necessary based on the current state of the data.
  
  Solution:
  
  Review Input Data: Check the data you are using for the simulation. Ensure that it is different from the existing data or that it meets the criteria for making changes.
  Adjust Simulation Parameters: Modify the parameters or criteria of the simulation to ensure that it targets the correct records or conditions that would lead to changes.
  Check for Locks: Investigate if there are any locks on the data that might prevent changes. You can use transaction codes like SM12 to check for locks.
  Consult Documentation: Review the relevant SAP documentation or help files for the specific transaction you are using to understand the expected behavior and any prerequisites for making changes.
  Test with Different Scenarios: Try running the simulation with different scenarios or data sets to see if changes are made under different conditions.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like FB50 (General Ledger), FB60 (Vendor Invoice), or others related to financial postings.
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific transaction or module you are working with.
  User Authorization: Ensure that you have the necessary authorizations to perform the simulation and make changes if required.
  Debugging: If you have access to debugging tools, you can analyze the program flow to understand why no changes are being made during the simulation.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.