How To Fix /LTB/TR_UI177 - String type should not be specified here

SAP Error Message - Details

• Message type: E = Error

• Message class: /LTB/TR_UI -

• Message number: 177

• Message text: String type should not be specified here

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 /LTB/TR_UI177 - String type should not be specified here ?

  The SAP error message /LTB/TR_UI177 String type should not be specified here typically occurs in the context of SAP applications that involve the use of the ABAP programming language, particularly when dealing with data types and structures in the context of UI (User Interface) development or data handling.
  Cause:
  This error message indicates that a string type has been incorrectly specified in a context where it is not allowed. In ABAP, certain data types are expected in specific contexts, and using a string type where a different type is required can lead to this error. This often happens in the following scenarios:
  
  Incorrect Data Type Declaration: A string type might have been declared in a place where a different data type (like a structure or a specific numeric type) is expected.
  UI Component Configuration: If you are working with UI components (like Fiori or Web Dynpro), the configuration might be expecting a specific data type for binding or data transfer, and a string type was provided instead.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Type Declarations: Review the code or configuration where the error is occurring. Ensure that the data types being used are appropriate for the context. If a string type is being used, consider changing it to a more suitable type (like a character type or a specific structure).
  
  
  Review UI Bindings: If the error is related to UI components, check the bindings and ensure that the data types match the expected types for the UI elements. For example, if a numeric field is expected, ensure that you are not binding a string type to it.
  
  
  Consult Documentation: Refer to the SAP documentation or the specific module documentation for guidance on the expected data types in the context you are working with.
  
  
  Debugging: If you are unable to identify the issue, use debugging tools to trace the execution and see where the incorrect data type is being introduced.
  
  
  Seek Help from SAP Community: If the issue persists, consider reaching out to the SAP community forums or support for additional insights or similar experiences from other users.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the different data types in ABAP, including character types, numeric types, and structures.
  SAP UI Technologies: Understanding the specific UI technology you are working with (like SAP Fiori, Web Dynpro, etc.) can provide insights into the expected data types and structures.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to identify and correct the cause of the /LTB/TR_UI177 error in your SAP environment.