How To Fix WA100 - Object type extensions only allowed in expert mode

WA100 - Overview

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 100

• Message text: Object type extensions only allowed in expert mode

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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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 WA100 - Object type extensions only allowed in expert mode ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WA100 Object type extensions only allowed in expert mode
  
  
  Cause:
  This error occurs when you try to create or modify an object type extension in the ABAP Dictionary (SE11) or related development tools without enabling the expert mode. Object type extensions are advanced modifications to standard SAP object types (such as tables, structures, or data elements) that are typically restricted to expert users because they can affect system stability and upgrade compatibility.
  SAP restricts these changes to expert mode to prevent accidental or unauthorized modifications that could lead to inconsistencies or system issues.
  
  Explanation:
  
  Object type extensions allow you to add fields or attributes to SAP standard objects.
  These extensions are considered expert-level changes because they can impact SAP standard behavior.
  By default, SAP prevents such changes unless the user explicitly enables expert mode.
  This safeguard helps maintain system integrity and ensures that only experienced developers perform