How To Fix MW808 - Parameter &1 must be greater than 0

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 808

• Message text: Parameter &1 must be greater than 0

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MW808 - Parameter &1 must be greater than 0 ?

  The SAP error message MW808, which states "Parameter &1 must be greater than 0," typically occurs in the context of inventory management or material management processes. This error indicates that a certain parameter, which is expected to have a positive value, is either zero or negative. The parameter in question is represented by &1, which will be replaced by the specific parameter name when the error message is generated.
  Causes:
  
  
  Incorrect Input Values: The most common cause is that a user has entered a value of zero or a negative number in a field that requires a positive value. This could happen during transactions like goods movements, inventory adjustments, or material master updates.
  
  
  Configuration Issues: There may be issues in the configuration of the material management module that lead to incorrect parameter settings.
  
  
  Data Integrity Issues: There could be inconsistencies in the data, such as missing or incorrect master data that leads to this error.
  
  
  Custom Code: If there are custom enhancements or user exits in the system, they might be incorrectly handling values, leading to this error.
  
  
  Solutions:
  
  
  Check Input Values: Review the transaction or process that triggered the error. Ensure that all relevant fields are populated with valid, positive values. 
  
  
  Review Configuration: If the error persists, check the configuration settings in the material management module to ensure that all parameters are set correctly.
  
  
  Data Validation: Perform a data validation check to ensure that all master data related to the materials involved is correct and complete. This includes checking material master records, stock levels, and any related documents.
  
  
  Debugging Custom Code: If there are custom developments, review the code to ensure that it correctly handles the parameters and does not inadvertently set them to zero or negative values.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details about the parameter in question, as it may provide additional context or troubleshooting steps.
  
  
  Contact SAP Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using transaction codes like MIGO (Goods Movement), MB1A (Goods Withdrawal), or others related to inventory management.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  User Forums: SAP Community forums and other user groups can be valuable resources for finding similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the MW808 error and implement a solution to resolve it.