How To Fix SO318 - File extension $ has already been assigned the parameter $

SAP Error Message - Details

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 318

• Message text: File extension $ has already been assigned the parameter $

What causes this issue?

You have entered a parameter name for a file extension for which there
is already a parameter.
The parameters of type 'PC' have the following function: At runtime
they have the information about which command needs to be carried out
on the PC to start the application belonging to the file extension. It
does not make sense to have several parameters for the same
application.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Remove the new parameter, since there is already one available which
carries out the required function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SO318 - File extension $ has already been assigned the parameter $ ?

  The SAP error message SO318 indicates that there is a conflict with file extensions and their associated parameters in the SAP system. This error typically occurs when you are trying to assign a file extension to a parameter that has already been assigned to another file extension.
  Cause:
  
  Duplicate Assignment: The file extension you are trying to assign is already linked to a different parameter in the SAP system.
  Configuration Error: There may be a misconfiguration in the settings related to file handling or document management.
  System Limitations: The system may have limitations on how many parameters can be assigned to a specific file extension.
  
  Solution:
  
  
  Check Existing Assignments:
  
  Go to the transaction code SO10 (or the relevant transaction for managing file types).
  Review the current assignments for the file extension in question.
  Identify if the file extension is already assigned to another parameter.
  
  
  
  Modify or Remove Conflicting Assignments:
  
  If you find that the file extension is already assigned, you can either modify the existing assignment or remove it if it is no longer needed.
  Ensure that the new assignment does not conflict with existing ones.
  
  
  
  Use Unique File Extensions:
  
  If possible, use a different file extension that is not currently assigned to any parameter.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to file handling and parameter assignments for additional guidance.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SO10, SOST, or others related to document management and file handling.
  SAP Notes: Check for any SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  System Configuration: Review the configuration settings in your SAP system related to document management and file handling to ensure they are set up correctly.
  
  By following these steps, you should be able to resolve the SO318 error and successfully manage file extensions and their parameters in your SAP system.