How To Fix 3O126 - Illigal Operation.

3O126 - Overview

• Message type: E = Error

• Message class: 3O - HR: Messages for Taiwan

• Message number: 126

• Message text: Illigal Operation.

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 3O126 - Illigal Operation. ?

  The SAP error message 3O126: Illegal Operation typically indicates that an operation being attempted in the SAP system is not allowed or is not valid in the current context. This error can arise in various scenarios, such as during data entry, processing transactions, or executing specific functions within the SAP environment.
  Possible Causes:
  
  Invalid Data Entry: The user may have entered data that does not conform to the expected format or constraints.
  Authorization Issues: The user may not have the necessary permissions to perform the operation.
  System Configuration: Certain configurations or settings in the SAP system may restrict specific operations.
  Transaction State: The transaction may be in a state that does not allow the requested operation (e.g., trying to change a document that is already posted).
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they may be causing the error due to logic that does not handle certain cases properly.
  
  Solutions:
  
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