How To Fix /UI2/FCM100 - Data cannot be read. Set user parameter /ui2/page_cache_off to blank

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/FCM -

• Message number: 100

• Message text: Data cannot be read. Set user parameter /ui2/page_cache_off to blank

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/FCM100 - Data cannot be read. Set user parameter /ui2/page_cache_off to blank ?

  The SAP error message /UI2/FCM100 Data cannot be read. Set user parameter /ui2/page_cache_off to blank typically occurs in the context of SAP Fiori applications when there is an issue with the caching mechanism used for Fiori Launchpad pages. This error indicates that the system is unable to retrieve the necessary data for a specific Fiori application or tile.
  Cause:
  
  Caching Issues: The error is often related to the caching mechanism that stores the configuration and data for Fiori applications. If the cache is corrupted or not properly configured, it can lead to this error.
  User Parameter Setting: The user parameter /ui2/page_cache_off may be set to a value that disables the cache, which can prevent the system from retrieving the required data.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the data or application, leading to this error.
  Backend Issues: There could be issues with the backend system or the OData services that the Fiori application relies on.
  
  Solution:
  
  
  Reset User Parameter:
  
  Go to the user settings in the SAP GUI or Fiori Launchpad.
  Navigate to the user parameters and look for /ui2/page_cache_off.
  Set this parameter to blank or delete it entirely. This allows the system to use the default caching behavior.
  
  
  
  Clear Cache:
  
  Clear the browser cache and cookies, as well as the Fiori Launchpad cache. This can often resolve issues related to stale data.
  In the SAP system, you can also clear the cache using transaction code /IWFND/MAINT_SERVICE to refresh the OData services.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary roles and authorizations to access the Fiori applications and the underlying OData services.
  
  
  
  Check Backend Services:
  
  Verify that the backend services are up and running. You can use transaction code /IWFND/ERROR_LOG to check for any errors related to OData services.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  Fiori Launchpad: The Fiori Launchpad is the entry point for Fiori applications, and it relies heavily on caching for performance.
  OData Services: Fiori applications typically consume OData services, and issues with these services can lead to data retrieval errors.
  User Parameters: User parameters in SAP allow users to customize their experience, and incorrect settings can lead to unexpected behavior.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.