How To Fix MW550 - Invalid value for selection flag. Valid: empty,1, 2, 3, 4

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 550

• Message text: Invalid value for selection flag. Valid: empty,1, 2, 3, 4

What causes this issue?

A disallowed value for the interface parameter SELECTIONFLAG was
transferred.

System Response

No allocation table data could be selected.

How to fix this error?

Make a new request and leave the interface parameter SELECTIONFLAG
empty and enter one of the following values:
1: Select allocation tables referencing the department entered
2: select allocation tables referencing the material group entered
3: select allocation tables referencing materials entered
4: select allocation table entered

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW550 - Invalid value for selection flag. Valid: empty,1, 2, 3, 4 ?

  The SAP error message MW550, which states "Invalid value for selection flag. Valid: empty, 1, 2, 3, 4," typically occurs in the context of inventory management or material management processes. This error indicates that an invalid value has been provided for a selection flag parameter in a transaction or function module.
  Cause:
  The error is caused by one of the following reasons:
  
  Incorrect Input Value: The selection flag parameter is expected to have specific values (empty, 1, 2, 3, or 4), and an invalid value has been provided.
  Configuration Issues: There may be a configuration issue in the system that is causing the selection flag to be set incorrectly.
  Custom Code: If there is custom code or enhancements in the system, it may be passing an invalid value to the selection flag.
  
  Solution:
  To resolve the MW550 error, you can take the following steps:
  
  
  Check Input Values: Review the input values being passed to the transaction or function. Ensure that the selection flag is set to one of the valid values (empty, 1, 2, 3, or 4).
  
  
  Debugging: If you have access to debugging tools, you can trace the execution of the program to see where the invalid value is being set. This can help identify if the issue is with user input, configuration, or custom code.
  
  
  Review Custom Code: If there are any custom enhancements or modifications in the system, review the code to ensure that it is correctly handling the selection flag values.
  
  
  Consult Documentation: Check the SAP documentation or help files related to the specific transaction or function module you are using. This may provide insights into the expected values for the selection flag.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message. There may be known issues or patches available.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. Provide them with details about the error, including the transaction code and any relevant context.
  
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to inventory management, such as MB1A, MB1B, or MB1C.
  Selection Flags: Understanding the purpose of the selection flags in the context of the specific transaction can help clarify what values are expected.
  SAP Community: Engaging with the SAP Community forums can also provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the MW550 error in your SAP system.