How To Fix DT313 - For. &-& (& and & have different data types)

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 313

• Message text: For. &-& (& and & have different data types)

What causes this issue?

When you assign foreign key fields to the key fields of the check
table, the corresponding fields must have the same data type. In the
case of the field of the foreign key table and the key field of the
check table listed in the message, the data types are not the same.

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

System Response

How to fix this error?

Correct the foreign key definition and activate the foreign key table
again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT313 - For. &-& (& and & have different data types) ?

  The SAP error message DT313 indicates a data type mismatch in a comparison operation. Specifically, it occurs when you are trying to compare or operate on two fields (or variables) that have different data types. This can happen in various contexts, such as in ABAP programs, function modules, or when working with database queries.
  Cause:
  The error arises when:
  
  You are trying to compare two variables or fields that are of different data types (e.g., comparing a character field with a numeric field).
  The operation being performed does not support the data types involved.
  Implicit type conversion is not possible due to the nature of the data types.
  
  Solution:
  To resolve the DT313 error, you can take the following steps:
  
  
  Check Data Types: Review the data types of the variables or fields involved in the operation. Ensure that they are compatible for the operation you are trying to perform.
  
  
  Explicit Conversion: If the data types are different but you need to compare them, you can explicitly convert one of the variables to match the data type of the other. For example:
  
  Use CONCATENATE or CAST functions to convert data types as needed.
  For numeric comparisons, ensure that character strings are converted to numbers using functions like CONVERT_TO_NUMBER.
  
  
  
  Modify Logic: If the comparison is not logically valid, consider modifying the logic of your program to avoid comparing incompatible types.
  
  
  Debugging: Use debugging tools to step through the code and identify where the mismatch occurs. This can help you pinpoint the exact line of code causing the issue.
  
  
  Check Database Fields: If the error occurs in a database query, check the data types of the fields in the database table to ensure they match the types used in your query.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the various data types in ABAP, such as CHAR, NUMC, INT, DATS, etc., to understand how they can be used and compared.
  Type Conversion Functions: SAP provides several functions for type conversion, such as CONVERT_TO_STRING, CONVERT_TO_NUMERIC, etc.
  Documentation: Refer to the SAP Help Portal or ABAP documentation for more details on data types and type conversion.
  
  By following these steps, you should be able to resolve the DT313 error and ensure that your comparisons are valid.