How To Fix MW656 - Internal error: command could not be executed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 656

• Message text: Internal error: command could not be executed

System Response

INCLUDE ISR_VERARBEITUNG

How to fix this error?

Restart allocation rule generation.
If the error occurs again, check whether a selection variant exists for
the key figure category you used. You can create a selection variant as
follows:
Automatically for the key figure category:
In the Allocation screen, choose Allocation rule -> Create selection
variant. Then enter one or more key figure categories and start the
program.
Manually:
Define the <DS:SIMG.W_ZF_VK_0463.SIMG_OAUF>selection variants</> in
Customizing for the allocation rule.
If the error still occurs after you have created a selection variant,
contact your system administrator.
Note for the system administrator:
A dynamic ASSIGN command could not be executed in the FORM routine
'Determine_RIS_Data'. It is possible that include TMCWWTOP, which is
required by function module 'MCW_GET_VALUES_FROM_INFOSTRUCT' for
evaluating the returned data, is empty. Check whether include TMCWWTOP
contains the program code for defining internal tables.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW656 - Internal error: command could not be executed ?

  The SAP error message MW656, which states "Internal error: command could not be executed," typically indicates that there is an issue with the execution of a command within the SAP system. This error can arise from various underlying causes, and troubleshooting it may require a systematic approach. Here are some potential causes, solutions, and related information:
  Causes:
  
  System Configuration Issues: There may be misconfigurations in the system settings or parameters that prevent the command from executing properly.
  Database Issues: Problems with the database, such as locks, corruption, or connectivity issues, can lead to this error.
  Authorization Problems: The user executing the command may not have the necessary authorizations to perform the action.
  Program Errors: There could be bugs or issues in the custom code or standard programs being executed.
  Transport Issues: If the error occurs after a transport, it may be due to missing objects or dependencies that were not transported correctly.
  System Load: High system load or performance issues can sometimes lead to internal errors.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) and short dump analysis (transaction ST22) for more detailed error messages that can provide insights into the root cause.
  Review Authorizations: Ensure that the user has the necessary authorizations to execute the command. Use transaction SU53 to analyze authorization failures.
  Database Check: Check the database for locks or issues. You can use transaction DB02 to monitor database performance and locks.
  Debugging: If the error is related to custom code, consider debugging the program to identify where the error occurs.
  Re-execute the Command: Sometimes, simply re-executing the command after a short period can resolve transient issues.
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available.
  System Performance: Monitor system performance and consider optimizing or increasing resources if high load is a factor.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), ST22 (Dump Analysis), SU53 (Authorization Check), and DB02 (Database Performance).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review SAP documentation for any specific modules or functionalities related to the command that is failing.
  
  By following these steps, you should be able to diagnose and potentially resolve the MW656 error in your SAP system.