How To Fix E1138 - Message Control entry already exists

E1138 - Overview

• 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.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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