How To Fix VN378 - Mail title for application &, output type &, language & not found

VN378 - Overview

• Message type: E = Error

• Message class: VN - Nachrichtensteuerung

• Message number: 378

• Message text: Mail title for application &, output type &, language & not found

What causes this issue?

The language or the output type of the mail output was changed.
Therefore, the system tried to read the mail title for the specified
combination of application/output type/language.
The system could not find this title.

System Response

The TEMPLATE object (condition record maintenance) or MESSAGE object
(output processing) has not changed. This means that the object is not
filled with the new mail title.

How to fix this error?

Reset the language or output type.
Select a language or an output type for which a mail title has been
maintained.
Maintain the required mail title in Customizing for output control.

Error message extract from SAP system. Copyright SAP SE.

VN378 - Details

• Certainly! Here's a detailed explanation for the SAP error message VN378: "Mail title for application &, output type &, language & not found":
  
  Error Message:
  VN378
  Mail title for application &, output type &, language & not found
  
  
  Cause:
  This error occurs when SAP tries to send an output (such as a purchase order, invoice, or other document) via email, but it cannot find the corresponding mail title (subject line) for the specified combination of:
  
  Application (e.g., purchasing, billing)
  Output type (e.g., NEU for purchase order)
  Language
  
  The mail title is a predefined subject line used in the email sent to the recipient. If this title is missing or not maintained for the given combination, SAP cannot generate the email subject, resulting in this error.
  
  Where is this maintained?
  The mail title is maintained in the customizing for output management, specifically in the message control or output determination settings.
  
  
  Solution:
  
  
  Check the mail title configuration:
  
  
  Go to transaction SPRO ?
  Materials Management ? Purchasing ?