How To Fix /UI2/START_UP001 - Association Header invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/START_UP -

• Message number: 001

• Message text: Association Header invalid

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/START_UP001 - Association Header invalid ?

  The SAP error message /UI2/START_UP001 Association Header invalid typically occurs in the context of SAP Fiori applications and indicates that there is an issue with the association header in the OData service or the Fiori launchpad configuration. This error can arise due to various reasons, including misconfigurations, issues with the OData service, or problems with the Fiori launchpad setup.
  Causes:
  
  Invalid OData Service Configuration: The OData service may not be properly configured, or the association header may not be correctly defined in the service metadata.
  Missing or Incorrect Authorization: The user may not have the necessary authorizations to access the OData service or the associated entities.
  Fiori Launchpad Configuration Issues: There may be issues with the Fiori launchpad configuration, such as incorrect target mappings or catalog assignments.
  Backend System Issues: There could be issues with the backend system that the Fiori application is trying to connect to, such as service unavailability or incorrect service URLs.
  
  Solutions:
  
  
  Check OData Service Configuration:
  
  Ensure that the OData service is correctly defined and activated in the SAP Gateway.
  Use transaction code /IWFND/MAINT_SERVICE to check the service status and ensure it is properly registered.
  
  
  
  Review Metadata:
  
  Check the metadata of the OData service to ensure that the associations are correctly defined. You can access the metadata by appending $metadata to the service URL.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary roles and authorizations to access the OData service and its associated entities. Use transaction code SU53 to check for authorization issues after the error occurs.
  
  
  
  Fiori Launchpad Configuration:
  
  Review the Fiori launchpad configuration, including the target mappings and catalogs. Ensure that the application is correctly assigned to the user’s role.
  Use transaction code LPD_CUST to check the launchpad configuration.
  
  
  
  Check Backend Connectivity:
  
  Ensure that the backend system is up and running and that there are no connectivity issues between the Fiori front-end server and the backend system.
  
  
  
  Debugging:
  
  If the issue persists, consider enabling debugging for the OData service to get more detailed error messages. This can help identify the root cause of the problem.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Refer to the official SAP documentation for Fiori and OData services for best practices and configuration guidelines.
  
  By following these steps, you should be able to identify and resolve the issue related to the /UI2/START_UP001 Association Header invalid error message.