How To Fix RSEC013 - User names with '.' (period) cannot be processed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSEC -

• Message number: 013

• Message text: User names with '.' (period) cannot be processed

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 RSEC013 - User names with '.' (period) cannot be processed ?

  The SAP error message RSEC013 indicates that user names containing a period (.) cannot be processed. This error typically arises in the context of user management and authorization in SAP systems, particularly when dealing with user IDs that include special characters.
  
  Cause:
  The primary cause of this error is that SAP does not allow periods in user names due to restrictions in its user management and authorization framework. User names are often used in various security and authorization checks, and the presence of a period can lead to complications in processing these checks.
  
  Solution:
  To resolve the RSEC013 error, you can take the following steps:
  
  
  Change User Name: If possible, change the user name to remove the period. This can be done through the user management transaction (e.g., SU01) by editing the user profile and updating the user ID to a valid format that does not include a period.
  
  
  Create a New User: If changing the