How To Fix WM806 - Incorrect Function Call

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 806

• Message text: Incorrect Function Call

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WM806 - Incorrect Function Call ?

  The SAP error message WM806 "Incorrect Function Call" typically occurs in the Warehouse Management (WM) module when there is an issue with the function call being made in the system. This error can arise due to various reasons, including incorrect parameters being passed to a function, issues with the configuration of the warehouse management system, or problems with the underlying data.
  Causes:
  
  Incorrect Function Parameters: The function being called may not be receiving the correct parameters or data types.
  Configuration Issues: There may be misconfigurations in the warehouse management settings that lead to the function call failing.
  Data Integrity Issues: Problems with master data or transactional data (e.g., inventory records, storage locations) can lead to this error.
  Custom Code: If there are custom enhancements or modifications in the system, they may not be handling certain scenarios correctly.
  System Bugs: Occasionally, this error can be caused by bugs in the SAP system itself, particularly if you are using an older version.
  
  Solutions:
  
  Check Function Parameters: Review the function call to ensure that all parameters are correct and valid. This includes checking data types and ensuring that required fields are populated.
  Review Configuration: Go through the WM configuration settings to ensure everything is set up correctly. This includes checking storage types, bins, and movement types.
  Data Validation: Validate the data being used in the transaction. Ensure that all relevant master data (like material master, storage location, etc.) is correctly maintained.
  Debugging: If you have access to debugging tools, you can trace the function call to identify where it is failing. This can provide insights into what is going wrong.
  Check for Custom Code: If there are any custom enhancements, review the code to ensure it is functioning as intended and not causing the error.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this issue. Sometimes, SAP releases fixes for known bugs.
  Consult Documentation: Review the official SAP documentation for the WM module to ensure that you are following the correct procedures for the function you are trying to execute.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in WM, such as LT01 (Create Transfer Order), LT10 (Transfer Order Confirmation), etc.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Support: If the issue persists and you are unable to resolve it, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the WM806 error in your SAP system.