How To Fix DNO123 - Attachment with file type &1 (&2) cannot be sent

SAP Error Message - Details

• Message type: E = Error

• Message class: DNO - Messages for General Notifications

• Message number: 123

• Message text: Attachment with file type &1 (&2) cannot be sent

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message DNO123 - Attachment with file type &1 (&2) cannot be sent ?

  The SAP error message DNO123 indicates that there is an issue with sending an attachment due to its file type or format. This error typically occurs when the system does not recognize the file type or when the file type is not allowed for sending as an attachment in the context of the operation you are trying to perform.
  Cause:
  
  Unsupported File Type: The file type you are trying to attach is not supported by the SAP system. For example, certain file formats like executable files (.exe) or specific proprietary formats may be restricted.
  Configuration Settings: The system may have specific configuration settings that restrict certain file types from being sent as attachments.
  File Size Limitations: The file may exceed the maximum size limit set for attachments in the SAP system.
  Missing MIME Type: The MIME type for the file may not be defined in the system, leading to the inability to process the attachment.
  
  Solution:
  
  Check File Type: Verify the file type you are trying to send. Ensure it is a supported format (e.g., PDF, DOCX, JPG, etc.).
  Change File Format: If the file type is unsupported, consider converting the file to a supported format before attempting to send it.
  Review Configuration: Check the SAP configuration settings related to attachments. This may involve consulting with your SAP Basis or security team to ensure that the file type is allowed.
  File Size: Ensure that the file size does not exceed the limits set in the SAP system. If it does, consider compressing the file or splitting it into smaller parts.
  MIME Type Configuration: If you have access to the system configuration, check the MIME type settings in transaction code SO10 or SCOT to ensure that the MIME type for the file is correctly defined.
  Consult Documentation: Refer to SAP documentation or support notes for any specific guidelines related to attachments and file types.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes like SOST (to check the status of sent messages) and SO10 (for text management) for further investigation.
  User Permissions: Ensure that the user has the necessary permissions to send attachments, as restrictions may apply based on user roles.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.