How To Fix WS479 - Message type of message &1 was changed manually

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 479

• Message text: Message type of message &1 was changed manually

Self-Explanatory Message

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• What is the cause and solution for SAP error message WS479 - Message type of message &1 was changed manually ?

  SAP Error Message:
  WS479 - Message type of message &1 was changed manually
  
  
  Cause:
  This message appears when the message type of a standard SAP message has been manually changed in the system. In SAP, messages (like error, warning, information messages) have predefined message types (e.g., E for error, W for warning, I for information). Changing the message type manually (for example, changing an error message to a warning) is generally not recommended because it can affect the standard behavior of SAP programs and processes.
  The system detects that the message type for a particular message number (indicated by &1) has been altered from its original standard setting.
  
  Explanation:
  
  SAP standard messages are delivered with a fixed message type.
  If a user or consultant changes the message type manually in transaction SE91 (Message Maintenance), the system logs this as a warning or error.
  This is often done to change the behavior of a message (e.g., to prevent a