How To Fix CNV_MBT253 - Not authorized

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 253

• Message text: Not authorized

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT253 - Not authorized ?

  The SAP error message CNV_MBT253 Not authorized typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the user does not have the necessary authorizations to perform the action they are attempting.
  Cause:
  
  Insufficient Authorizations: The user executing the migration or conversion process lacks the required authorizations for specific transactions or objects.
  Role Assignment: The user may not have been assigned the appropriate roles that include the necessary permissions for the migration activities.
  Profile Issues: The user profile may not be correctly configured to allow access to the required functions.
  
  Solution:
  
  
  Check User Authorizations:
  
  Use transaction code SU53 immediately after the error occurs to analyze the authorization check. This will show which authorization object failed.
  Review the authorization logs to identify missing authorizations.
  
  
  
  Assign Required Roles:
  
  Ensure that the user has been assigned the necessary roles that include the required authorizations for the migration process. Common roles for migration activities include:
  
  SAP_ALL (for testing purposes only, not recommended for production)
  Specific roles related to data migration or conversion (e.g., roles starting with SAP_MIGRATION_*).
  
  
  
  
  
  Modify Authorization Profiles:
  
  If the user needs specific authorizations, you may need to modify existing roles or create new ones that include the necessary authorization objects.
  
  
  
  Consult with Security Team:
  
  If you are not authorized to make changes to user roles or profiles, contact your SAP security team or administrator to request the necessary authorizations.
  
  
  
  Testing:
  
  After making changes, have the user log out and log back in to ensure that the new authorizations take effect. Then, attempt the migration process again.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SU01: User maintenance (to check or assign roles).
  PFCG: Role maintenance (to create or modify roles).
  SU53: Display authorization check (to analyze authorization failures).
  
  
  
  Documentation: Refer to SAP Help Portal or specific migration documentation for detailed information on required authorizations for the migration process you are performing.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to the CNV_MBT253 error or provide additional guidance on authorizations.
  
  
  By following these steps, you should be able to resolve the CNV_MBT253 error and proceed with your migration or conversion tasks.