How To Fix /IAM/UI201 - Field &1 does not match display type &2 (&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: /IAM/UI -

• Message number: 201

• Message text: Field &1 does not match display type &2 (&3)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IAM/UI201 - Field &1 does not match display type &2 (&3) ?

  The SAP error message /IAM/UI201 Field &1 does not match display type &2 (&3) typically indicates a mismatch between the expected display type of a field and the actual data type or format being used in the user interface. This error is often encountered in the context of SAP Fiori applications or when using the SAP UI5 framework.
  Cause:
  
  Field Type Mismatch: The field defined in the backend (e.g., in the data model or database) does not match the expected display type in the frontend. For example, a numeric field might be expected, but a string is being passed.
  Data Binding Issues: There may be issues with how data is bound to the UI elements, leading to incorrect data types being displayed.
  Configuration Errors: Incorrect configuration in the UI5 application or Fiori elements can lead to this error, especially if the metadata is not correctly defined.
  Version Compatibility: Sometimes, using different versions of SAP components can lead to compatibility issues, resulting in this error.
  
  Solution:
  
  Check Field Definitions: Verify the field definitions in the backend (e.g., in the ABAP Dictionary) and ensure that they match the expected display types in the UI.
  Review Data Binding: Inspect the data binding in the UI5 application. Ensure that the data types being passed to the UI components match the expected types.
  Update Metadata: If you are using OData services, ensure that the metadata is correctly defined and up to date. You may need to regenerate the metadata if changes were made.
  Debugging: Use the browser's developer tools to debug the application. Check the console for any additional error messages that might provide more context.
  Consult Documentation: Review the SAP documentation for the specific UI5 controls or Fiori elements you are using to ensure that you are following best practices.
  Check for Updates: Ensure that your SAP system and UI components are up to date, as updates may resolve compatibility issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently releases notes that address specific bugs or issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  SAP Help Portal: Refer to the SAP Help Portal for detailed documentation on UI5 and Fiori development, which may provide insights into common pitfalls and best practices.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.