How To Fix E1138 - Message Control entry already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: E1 - Messages for IDoc Basis

• Message number: 138

• Message text: Message Control entry already exists

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 E1138 - Message Control entry already exists ?

  The SAP error message E1138 ("Message Control entry already exists") typically occurs when there is an attempt to create a new entry in the message control table (usually related to message types or message classes) that already exists. This can happen in various contexts, such as when configuring message control for output types, notifications, or other messaging functionalities in SAP.
  Cause:
  
  Duplicate Entry: The most common cause is that the entry you are trying to create already exists in the relevant message control table.
  Incorrect Configuration: There may be a misconfiguration in the settings where the system is trying to create a duplicate entry.
  Transport Issues: If you are transporting configuration from one system to another, there might be conflicts with existing entries.
  
  Solution:
  
  
  Check Existing Entries: 
  
  Go to the relevant transaction (e.g., NACE for output types) and check if the entry you are trying to create already exists. If it does, you may need to modify the existing entry instead of creating a new one.
  
  
  
  Modify Instead of Create: 
  
  If the entry already exists and you need to change it, select the existing entry and make the necessary modifications rather than trying to create a new one.
  
  
  
  Delete Duplicate Entries: 
  
  If you find that there are indeed duplicate entries that should not exist, you can delete the unnecessary ones. However, be cautious and ensure that you are not removing entries that are in use.
  
  
  
  Review Transport Requests: 
  
  If this issue arises after a transport, review the transport requests to ensure that they do not contain conflicting entries. You may need to adjust the transport or manually resolve conflicts.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or help resources for specific guidance related to the message control you are working with, as the context can vary.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to message control include:
  
  NACE: Output Types
  SPRO: Customizing settings
  
  
  Message Control Tables: Familiarize yourself with the relevant tables, such as:
  
  TNAPR: Output Types
  TNMPT: Message Control
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to create or modify entries in the message control settings.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.