How To Fix GU918 - Table & and table & do not have the same type

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 918

• Message text: Table & and table & do not have the same type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message GU918 - Table & and table & do not have the same type ?

  The SAP error message GU918 indicates that there is a mismatch in the data types of two tables that are being compared or joined in a process. This error typically arises in scenarios involving table joins, data transfers, or when trying to perform operations that require both tables to have compatible structures.
  Cause:
  
  Data Type Mismatch: The most common cause is that the fields being compared or joined from the two tables have different data types. For example, one field might be defined as a character type (CHAR) while the other is defined as a numeric type (NUMC).
  Field Length Differences: Even if the data types are the same, differences in field lengths can also lead to this error.
  Inconsistent Table Definitions: If the tables have been modified or updated in a way that their structures are no longer compatible, this can also trigger the error.
  
  Solution:
  
  Check Data Types: Review the data types of the fields in both tables. Ensure that they are compatible. You can do this by using transaction codes like SE11 (Data Dictionary) to view the table definitions.
  Modify Data Types: If you find that the data types are indeed different, you may need to modify one of the tables to ensure that the fields being compared or joined have the same data type.
  Adjust Field Lengths: If the data types are the same but the lengths differ, consider adjusting the field lengths to match.
  Review ABAP Code: If the error occurs in custom ABAP code, review the code to ensure that the fields being used in the operations are correctly defined and compatible.
  Use CAST or CONVERT Functions: In some cases, you can use SQL functions like CAST or CONVERT to explicitly convert one data type to another during the query execution.
  
  Related Information:
  
  Transaction Codes: Use SE11 to check table definitions, SE80 for object navigation, and SE37 for function modules that might be involved in the process.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If the error occurs during a specific transaction or program, consider using the debugger to trace the execution and identify where the mismatch occurs.
  Documentation: Refer to SAP documentation for guidelines on data types and table structures to ensure compliance with best practices.
  
  By following these steps, you should be able to identify the cause of the GU918 error and implement a suitable solution.