How To Fix W3_API401 - Cannot use files of this type as MIME objects

SAP Error Message - Details

• Message type: E = Error

• Message class: W3_API - WAB: API Messages

• Message number: 401

• Message text: Cannot use files of this type as MIME objects

What causes this issue?

The file type you have entered cannot be used as a MIME object - DLL
and OCX files are not admissable file types.

System Response

The system cannot create the MIME object.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W3_API401 - Cannot use files of this type as MIME objects ?

  SAP Error Message:
  W3_API401 Cannot use files of this type as MIME objects
  
  Cause
  This error occurs when you try to send or process a file in SAP as a MIME object, but the file type (based on its extension or content type) is not supported or allowed for MIME processing in the current context. Essentially, the SAP system refuses to treat the file as a MIME object because it does not recognize or permit the file type for MIME handling.
  Common scenarios include:
  
  Attempting to attach or send files with unsupported or unregistered MIME types in SAPscript, Smart Forms, or SAP Office.
  The MIME repository or MIME type configuration in SAP does not include the file type you are trying to use.
  The file extension is missing or incorrect, causing SAP to fail in determining the MIME type.
  
  
  Solution
  
  
  Check and Register MIME Types:
  
  Use transaction SICF or SO10 to check MIME type configurations.
  Use transaction SO10 or SO23 to