How To Fix MN471 - An invalid message occurred (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 471

• Message text: An invalid message occurred (see long text)

What causes this issue?

The message type (error, warning, etc.) is not allowed.

System Response

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

How to fix this error?

Contact SAP. A program error has occurred.
The message class is &V1&, the message type is &V2&, and the message
number is &V3&.

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 MN471 - An invalid message occurred (see long text) ?

  The SAP error message MN471 ("An invalid message occurred (see long text)") typically indicates that there is an issue with the message processing in the system, often related to the handling of messages in the context of logistics or inventory management. This error can arise in various scenarios, such as during the processing of goods movements, inventory updates, or other related transactions.
  Possible Causes:
  
  Incorrect Message Type: The system may be trying to process a message type that is not valid or not configured correctly.
  Configuration Issues: There may be issues with the configuration of message types in the relevant application area (e.g., MM, WM).
  Data Inconsistencies: There could be inconsistencies in the data being processed, such as missing or incorrect information in the relevant master data or transaction data.
  Authorization Issues: The user may not have the necessary authorizations to process the message.
  System Bugs: There may be bugs or issues in the SAP system that are causing the error.
  
  Solutions:
  
  Check Long Text: The first step is to check the long text associated with the error message for more specific details about the issue.
  Review Configuration: Verify the configuration settings for message types in the relevant application area. Ensure that all necessary message types are correctly defined and active.
  Data Validation: Check the data being processed for any inconsistencies or missing information. Ensure that all required fields are filled out correctly.
  User Authorizations: Ensure that the user has the necessary authorizations to perform the action that triggered the error.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to this error message.
  Debugging: If you have access to debugging tools, you can analyze the program flow to identify where the error is occurring.
  Contact Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to look into transaction codes related to message processing, such as MB1A, MB1B, or MB1C for goods movements.
  Message Control: Familiarize yourself with the message control settings in SAP, which can be found in the customizing settings under Logistics.
  Documentation: Review SAP documentation related to the specific module you are working with (e.g., Materials Management, Warehouse Management) for more insights into message handling.
  
  By following these steps, you should be able to diagnose and resolve the MN471 error in your SAP system.