How To Fix GU299 - Detailed display only supports tables of the same type

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 299

• Message text: Detailed display only supports tables of the same type

What causes this issue?

You want to display the detailed information of an account.
The detail display, however, only supports a comparsion between two
local ledgers or between two global ledgers.

System Response

The function cannot be executed.

How to fix this error?

Display the data for both ledgers in an alternative mode using the
summary record display.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU299 - Detailed display only supports tables of the same type ?

  The SAP error message GU299, which states "Detailed display only supports tables of the same type," typically occurs when you are trying to display detailed information for a table that is not compatible with the type of data being displayed. This error is often encountered in the context of SAP's reporting or data display functionalities, particularly when dealing with ALV (ABAP List Viewer) reports or similar data display mechanisms.
  Cause:
  The error is usually caused by one of the following issues:
  
  Mixed Table Types: You are attempting to display data from multiple tables that are of different types (e.g., different structures or data types).
  Inconsistent Data Structures: The data structures of the tables being displayed do not match, which can happen if the fields in the tables are not aligned or if they have different data types.
  Incorrect Configuration: The configuration of the report or the ALV grid may not be set up correctly to handle the data being passed to it.
  
  Solution:
  To resolve the GU299 error, you can take the following steps:
  
  
  Check Table Types: Ensure that all tables you are trying to display are of the same type. If you are combining data from different sources, make sure they have compatible structures.
  
  
  Align Data Structures: If you are using multiple internal tables, ensure that they have the same fields and data types. You may need to create a common structure that both tables can conform to.
  
  
  Modify the Report Logic: If you are using a custom report, review the logic to ensure that it is correctly handling the data types and structures. You may need to adjust the way data is being fetched or displayed.
  
  
  Use a Single Table: If possible, try to consolidate the data into a single internal table before displaying it. This can help avoid issues with mixed types.
  
  
  Debugging: Use the debugging tools in SAP to trace the execution of the report and identify where the mismatch is occurring. This can help you pinpoint the exact cause of the error.
  
  
  Consult Documentation: Review SAP documentation or help resources related to ALV and data display to ensure you are following best practices.
  
  
  Related Information:
  
  ALV (ABAP List Viewer): A tool in SAP for displaying lists and reports in a user-friendly format. Understanding how ALV works can help in troubleshooting display issues.
  Data Dictionary: Familiarize yourself with the data dictionary in SAP to understand the structures and types of tables you are working with.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be updates or fixes available.
  
  By following these steps, you should be able to resolve the GU299 error and successfully display the data you need.