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

DNO123 - Overview

• 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?

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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.

DNO123 - Details

• 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:
  
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