How To Fix MW871 - Currently not possible to change alloc profile after simulating qties

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 871

• Message text: Currently not possible to change alloc profile after simulating qties

What causes this issue?

Quantities have already been simulated for this item.

System Response

The system does not allow you to simulate for a second time.

How to fix this error?

If you want to simulate again using a changed profile, you must
to call up the transaction again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW871 - Currently not possible to change alloc profile after simulating qties ?

  The SAP error message MW871, which states "Currently not possible to change allocation profile after simulating quantities," typically occurs in the context of the allocation process in SAP, particularly when dealing with stock allocation or distribution scenarios. This error indicates that the system does not allow changes to the allocation profile after a simulation of quantities has been performed.
  Cause:
  
  Simulation Lock: When you simulate quantities in the allocation process, the system locks certain parameters to ensure data integrity. This lock prevents changes to the allocation profile until the simulation is either completed or canceled.
  Process Flow: The allocation process may have specific steps that need to be followed in a certain order. Changing the allocation profile after a simulation can disrupt this flow.
  Configuration Settings: There may be specific configuration settings in the allocation process that restrict changes after a simulation.
  
  Solution:
  
  Cancel Simulation: If you need to change the allocation profile, you should first cancel the simulation. Look for an option to revert or cancel the simulation in the transaction you are using.
  Re-run Simulation: After making the necessary changes to the allocation profile, you can re-run the simulation to see the updated results.
  Check Configuration: Review the configuration settings related to the allocation process to ensure that they align with your business requirements. If necessary, consult with your SAP Basis or configuration team.
  User Authorization: Ensure that you have the necessary authorizations to make changes to the allocation profile. Sometimes, restrictions can be due to user roles and permissions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the relevant transaction codes used for allocation processes, such as /SAPAPO/ALLOCATION or others specific to your SAP version.
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that address specific error messages and provide solutions or workarounds.
  Documentation: Review the SAP documentation related to allocation profiles and simulation processes to understand the expected workflow and any limitations.
  
  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.