How To Fix AJ637 - Simulation cannot be carried out from billing

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 637

• Message text: Simulation cannot be carried out from billing

What causes this issue?

The simulation that was called up from billing could not be carried out
because there is a move-out and several time-slices in the simulation
period.

System Response

The simulation is canceled.

How to fix this error?

This is an unexpected situation. Contact SAP.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ637 - Simulation cannot be carried out from billing ?

  The SAP error message AJ637, which states "Simulation cannot be carried out from billing," typically occurs in the context of billing processes in SAP, particularly when trying to simulate billing documents or invoices. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Missing Configuration: The billing document type may not be configured correctly for simulation.
  Inconsistent Data: There may be inconsistencies in the data related to the billing document, such as missing master data or incomplete transaction data.
  Authorization Issues: The user may not have the necessary authorizations to perform the simulation.
  System Settings: Certain system settings or parameters may prevent the simulation from being executed.
  Document Status: The billing document may be in a status that does not allow for simulation (e.g., already posted or completed).
  
  Solutions:
  
  Check Configuration: Review the configuration settings for the billing document type in the SAP system. Ensure that the document type is set up to allow simulations.
  Validate Data: Check the data associated with the billing document. Ensure that all required fields are filled and that there are no inconsistencies in the master data (e.g., customer master, material master).
  Review Authorizations: Ensure that the user attempting to perform the simulation has the necessary authorizations. This can be checked in the user roles and profiles.
  System Parameters: Review any relevant system parameters or settings that might affect the simulation process. This may involve consulting with your SAP Basis or technical team.
  Document Status: Verify the status of the billing document. If it is already posted or in a status that does not allow simulation, you may need to reverse or change the status before attempting the simulation again.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as VF01 (Create Billing Document), VF02 (Change Billing Document), and VF03 (Display Billing Document) to navigate through the billing process.
  SAP Notes: Check for any SAP Notes related to error AJ637 in the SAP Support Portal. There may be specific patches or updates that address this issue.
  Documentation: Review SAP documentation or help files related to billing and simulation processes for additional insights and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.