How To Fix /UI5/DESCR_VAR_CHECK027 - Reference app &1 is not registered in IAM

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/DESCR_VAR_CHECK -

• Message number: 027

• Message text: Reference app &1 is not registered in IAM

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 /UI5/DESCR_VAR_CHECK027 - Reference app &1 is not registered in IAM ?

  The SAP error message /UI5/DESCR_VAR_CHECK027 Reference app &1 is not registered in IAM typically indicates that a specific application (referred to as "reference app") is not properly registered in the Identity Authentication Management (IAM) system. This can occur in SAP Fiori or UI5 applications when the application is trying to access resources or services that require authentication and authorization.
  Cause:
  
  Application Not Registered: The application you are trying to access is not registered in the IAM system.
  Configuration Issues: There may be misconfigurations in the IAM settings or the application descriptor (manifest.json).
  Missing Roles/Permissions: The user may not have the necessary roles or permissions to access the application.
  Incorrect URL: The URL used to access the application may be incorrect or not pointing to the right instance.
  
  Solution:
  
  
  Register the Application:
  
  Ensure that the application is registered in the IAM system. This typically involves adding the application to the list of registered applications in the IAM configuration.
  Check the application ID and ensure it matches what is expected in the IAM.
  
  
  
  Check IAM Configuration:
  
  Review the IAM configuration settings to ensure that the application is correctly set up with the necessary parameters.
  Verify that the application is associated with the correct authentication method.
  
  
  
  Update Application Descriptor:
  
  Check the manifest.json file of the application to ensure that it contains the correct settings for the IAM.
  Ensure that the sap.app.id and other relevant properties are correctly defined.
  
  
  
  User Roles and Permissions:
  
  Verify that the user trying to access the application has the necessary roles assigned in the IAM.
  Check if the user needs to be assigned specific roles that grant access to the application.
  
  
  
  Test the URL:
  
  Ensure that the URL used to access the application is correct and points to the right environment (development, testing, production).
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for IAM and UI5 applications for any specific configuration steps or troubleshooting tips.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might 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.
  Logs and Traces: Review application logs and traces for more detailed error messages that could provide additional context for the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.