How To Fix M2647 - Formula and external program cannot be used simultaneously

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 647

• Message text: Formula and external program cannot be used simultaneously

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M2647 - Formula and external program cannot be used simultaneously ?

  The SAP error message M2647 ("Formula and external program cannot be used simultaneously") typically occurs in the context of Material Management (MM) or Production Planning (PP) when there is an attempt to use both a formula and an external program in a way that is not allowed by the system.
  Cause:
  This error arises when:
  
  A formula is defined for a material or process, and at the same time, an external program (like a user exit or a custom program) is being called or executed.
  The system does not allow the simultaneous use of both because they can conflict with each other, leading to inconsistencies in calculations or data processing.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration: Review the configuration settings for the material or process in question. Ensure that you are not trying to use both a formula and an external program at the same time.
  
  
  Modify the Process: If you need to use a formula, ensure that any external programs or user exits are not being triggered during the same process. You may need to adjust the logic in your program or the way the formula is applied.
  
  
  Use Only One Method: Decide whether to use the formula or the external program for the specific calculation or process. Remove the conflicting method from the configuration.
  
  
  Debugging: If you are unsure where the conflict is occurring, you may need to debug the process to identify where the formula and external program are being invoked together.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on using formulas and external programs in your version of SAP.
  
  
  Seek Help from SAP Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to material management and production planning, such as MM01 (Create Material), MM02 (Change Material), and others that might be relevant to your process.
  User Exits and BAdIs: Understand how user exits and Business Add-Ins (BAdIs) work in your SAP environment, as they can often be the source of conflicts with formulas.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.