How To Fix R8429 - Different data types of field &1

SAP Error Message - Details

• Message type: E = Error

• Message class: R8 - Messages from the meta data generation

• Message number: 429

• Message text: Different data types of field &1

What causes this issue?

The internal lengths of field &v1& do not correspond in the extract
structure and in the extraction view.

System Response

The DataSource cannot be saved like this.

How to fix this error?

Adjust either the extract structure or the extraction view.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message R8429 - Different data types of field &1 ?

  The SAP error message R8429, which states "Different data types of field &1," typically occurs when there is a mismatch in the data types of fields being compared or assigned in a program or configuration. This can happen in various scenarios, such as during data processing, report generation, or when working with ABAP code.
  Cause:
  
  Data Type Mismatch: The most common cause is that the field &1 is being used in a context where its data type does not match the expected data type. For example, trying to assign a character field to a numeric field or vice versa.
  Field Length Issues: Sometimes, even if the data types are the same (e.g., both are character fields), the length of the fields may differ, leading to this error.
  Inconsistent Data Definitions: If the field is defined differently in different contexts (e.g., in a database table vs. in a program), this can lead to conflicts.
  
  Solution:
  
  Check Data Types: Review the data types of the fields involved in the operation that triggered the error. Ensure that they are compatible. You can do this by checking the data dictionary (SE11) or the ABAP code where the fields are defined.
  Adjust Field Definitions: If you find that the data types or lengths are inconsistent, you may need to adjust the field definitions in the relevant database tables or structures to ensure they match.
  Modify ABAP Code: If the error occurs in ABAP code, modify the code to ensure that the data types are compatible. This may involve using type conversion functions (like CONVERT or CAST) to ensure that the data types match before performing operations.
  Use Data Type Conversion: If necessary, use explicit data type conversion to convert one field to the type of the other before performing the operation.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE38 (ABAP Editor) to investigate and modify the relevant objects.
  Debugging: If you are unable to identify the issue, consider using the ABAP debugger to step through the code and observe the data types and values of the fields at runtime.
  Documentation: Refer to SAP documentation or community forums for additional insights and examples related to this error message.
  
  By following these steps, you should be able to identify and resolve the cause of the R8429 error in your SAP environment.