How To Fix WER191 - Inversion flag value &1 is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 191

• Message text: Inversion flag value &1 is invalid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER191 - Inversion flag value &1 is invalid ?

  Certainly! Here's detailed information about the SAP error message WER191 - Inversion flag value &1 is invalid:
  
  Error Message
  WER191: Inversion flag value &1 is invalid
  
  Cause
  This error occurs when an invalid or unexpected value is passed or set for the inversion flag in a function module, BAPI, or during a process related to goods movements, inventory management, or invoice verification in SAP.
  The inversion flag typically indicates whether a document or transaction should be inverted (reversed) or not. Valid values are usually predefined (e.g., 'X' for inversion, space or blank for no inversion). If the system receives a value outside the expected set, it triggers this error.
  Common scenarios causing this error:
  
  Custom code or user input passing an incorrect inversion flag value.
  Incorrect parameter mapping in BAPI calls or IDocs.
  Data inconsistencies or corrupted data in the document or transaction.
  Incorrect configuration or enhancement implementations.
  
  
  Solution
  
  
  Check the Inversion Flag Value:
  
  Identify where the inversion flag is being set or passed.
  Ensure the value is one of the valid options (usually 'X' or space).
  Correct any custom code or interface sending invalid values.
  
  
  
  Debug the Process:
  
  Use transaction SE37 or SE80 to debug the function module or BAPI where the error occurs.
  Check the parameter for the inversion flag and verify its value before the error is raised.
  
  
  
  Review Custom Enhancements:
  
  If user exits, BADIs, or enhancements are involved, verify that they handle the inversion flag correctly.
  Correct any logic that sets an invalid flag.
  
  
  
  Check Configuration:
  
  Review related configuration in Materials Management (MM), Inventory Management (IM), or Invoice Verification (IV) to ensure no invalid settings.
  
  
  
  Data Consistency:
  
  If the error occurs during document processing, check the document data for inconsistencies.
  Use standard SAP tools or reports to verify document integrity.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to message WER191 for any known issues or patches.
  If unresolved, raise a message with SAP Support including detailed logs and steps to reproduce.
  
  
  
  
  Related Information
  
  Module: Materials Management (MM), Inventory Management (IM), Invoice Verification (IV)
  Typical Function Modules: BAPI_GOODSMVT_CREATE, BAPI_INCOMINGINVOICE_CREATE, or similar.
  Transaction Codes: MIGO, MIRO, or custom transactions involving goods movement or invoice processing.
  SAP Notes: Check SAP ONE Support Launchpad for notes referencing WER191.
  Debugging Tools: SE37 (Function Module Test), SE80 (ABAP Workbench), ST22 (Dump Analysis), SM21 (System Log).
  
  
  If you provide the exact context or transaction where this error occurs, I can help with more specific guidance.