How To Fix /UI2/FDM_PARSER003 - Node level &1 not expected in parser

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/FDM_PARSER -

• Message number: 003

• Message text: Node level &1 not expected in parser

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/FDM_PARSER003 - Node level &1 not expected in parser ?

  The SAP error message /UI2/FDM_PARSER003 Node level &1 not expected in parser typically occurs in the context of SAP Fiori applications, particularly when there is an issue with the parsing of the Fiori Design Mode (FDM) configuration or the metadata of the application.
  Cause:
  
  Incorrect Metadata Structure: The error often arises when the metadata structure of the application does not match the expected format. This can happen if there are changes in the underlying data model or if the application is not properly configured.
  Version Mismatch: If there is a version mismatch between the Fiori front-end server and the back-end system, it can lead to parsing errors.
  Corrupted or Incomplete Configuration: If the configuration files or the application’s deployment is incomplete or corrupted, it can lead to this error.
  Custom Development Issues: If there are custom developments or extensions that do not adhere to the expected structure, it can trigger this error.
  
  Solution:
  
  Check Metadata: Review the metadata of the application to ensure it is correctly defined. You can use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to check the OData service and its metadata.
  Clear Cache: Clear the cache of the Fiori Launchpad and the browser. Sometimes, stale cache can lead to parsing issues.
  Update Components: Ensure that all components of the Fiori application are up to date. This includes the front-end server and the back-end system.
  Review Custom Code: If there are custom developments, review the code to ensure it adheres to the expected structure and does not introduce any unexpected nodes.
  Check for Notes: Look for any SAP Notes related to this error message. SAP frequently releases notes that address known issues and provide solutions or workarounds.
  Re-deploy the Application: If the application is custom-built, consider re-deploying it to ensure that all components are correctly configured.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error.
  Fiori Launchpad Configuration: Review the configuration settings of the Fiori Launchpad to ensure that all applications are correctly set up.
  SAP Community: Check the SAP Community forums for discussions related to this error, as other users may have encountered and resolved similar issues.
  Debugging: If you have access to the development environment, consider debugging the application to identify the exact point of failure in the parsing process.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP Support for further assistance.