How To Fix FDM_MIRROR301 - You are not allowed to post manually in the substitute system

SAP Error Message - Details

• Message type: E = Error

• Message class: FDM_MIRROR - Mirror System Messages

• Message number: 301

• Message text: You are not allowed to post manually in the substitute system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDM_MIRROR301 - You are not allowed to post manually in the substitute system ?

  The SAP error message FDM_MIRROR301 indicates that a user is attempting to post manually in a substitute system, which is not permitted. This error typically arises in the context of financial document management or when dealing with systems that have a mirrored or substitute setup, often used in scenarios like data replication or system integration.
  Cause:
  
  User Authorization: The user does not have the necessary authorizations to perform manual postings in the substitute system.
  System Configuration: The substitute system is configured to prevent manual postings to ensure data integrity and consistency.
  Business Process Rules: There may be business rules in place that restrict manual postings to maintain a controlled environment.
  
  Solution:
  
  
  Check User Authorizations:
  
  Ensure that the user has the appropriate roles and authorizations to perform postings in the substitute system. This can be done by reviewing the user's profile in the SAP authorization management (transaction code SU01).
  
  
  
  Review System Configuration:
  
  Consult with your SAP Basis or system administrator to check the configuration settings of the substitute system. They may need to adjust settings to allow manual postings if it aligns with business processes.
  
  
  
  Follow Business Processes:
  
  If manual postings are not allowed due to business rules, consider using the appropriate processes for posting transactions. This may involve using automated processes or workflows that are designed for the substitute system.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines provided by your organization regarding the use of substitute systems. This may provide insights into the intended use and restrictions.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you believe it should not be occurring, consider reaching out to SAP support for further assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB01 (for manual document posting) and FBL1N (for vendor line items) to understand where the error may be occurring.
  SAP Notes: Check for any SAP Notes related to FDM (Financial Document Management) and substitute systems that may provide additional context or solutions.
  Training and Documentation: Ensure that users are trained on the proper procedures for using substitute systems to minimize errors and improve compliance with business processes.
  
  By addressing the authorization, configuration, and process adherence, you should be able to resolve the FDM_MIRROR301 error effectively.