How To Fix /UI2/MIGRATION100 - Unexpected error occured.

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/MIGRATION -

• Message number: 100

• Message text: Unexpected error occured.

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 /UI2/MIGRATION100 - Unexpected error occured. ?

  The SAP error message /UI2/MIGRATION100 Unexpected error occurred typically arises during the migration of SAP Fiori applications or when there are issues with the UI2 framework. This error can be caused by various factors, including configuration issues, missing components, or problems with the underlying data model.
  Possible Causes:
  
  Missing or Incomplete Configuration: The Fiori launchpad or specific applications may not be configured correctly.
  Transport Issues: If the application or its components were transported from one system to another, there may be inconsistencies.
  Authorization Issues: The user may not have the necessary authorizations to access certain components or applications.
  Backend Issues: Problems with the backend services or OData services that the Fiori application relies on.
  Cache Issues: Old or corrupted cache data can lead to unexpected errors.
  Version Compatibility: Incompatibility between different versions of SAP components or Fiori applications.
  
  Solutions:
  
  Check Configuration: Ensure that all necessary configurations for the Fiori launchpad and applications are correctly set up.
  Review Transport Logs: If the issue arose after a transport, check the transport logs for any errors or warnings.
  Authorization Check: Verify that the user has the required roles and authorizations to access the Fiori applications.
  Backend Service Check: Use transaction /IWFND/MAINT_SERVICE to check if the OData services are active and properly configured.
  Clear Cache: Clear the browser cache and the SAP Gateway cache. You can do this by using transaction /IWFND/CACHE to clear the OData cache.
  Check Logs: Use transaction SLG1 to check application logs for more detailed error messages that can provide insights into the issue.
  Update Components: Ensure that all relevant SAP components are up to date and compatible with each other.
  Debugging: If you have access to the backend, you can debug the application to identify the exact point of failure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message or the components you are working with. SAP frequently updates their knowledge base with solutions for common issues.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Documentation: Refer to the official SAP Fiori and UI2 documentation for best practices and troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.