How To Fix DDLS344 - CAST & of type & to type & is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 344

• Message text: CAST & of type & to type & is not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS344 - CAST & of type & to type & is not possible ?

  The SAP error message DDLS344 indicates that there is an issue with type casting in your ABAP code or in a Data Dictionary object. This error typically occurs when you attempt to cast a data type to another incompatible data type, which is not allowed in ABAP.
  Cause:
  The error can occur due to several reasons:
  
  Incompatible Data Types: You are trying to cast a data type that is not compatible with the target type. For example, trying to cast a character type to a numeric type directly without proper conversion.
  Incorrect Data Dictionary Definitions: The data types defined in the Data Dictionary (DDIC) may not match the expected types in your ABAP program.
  Type Mismatch in Structures or Tables: If you are working with structures or internal tables, the fields may not match in terms of data types.
  
  Solution:
  To resolve the DDLS344 error, you can take the following steps:
  
  
  Check Data Types: Review the data types involved in the casting operation. Ensure that the source and target types are compatible. If they are not, you may need to convert the data explicitly using appropriate conversion functions (e.g., CONVERT, CAST, etc.).
  
  
  Use Explicit Conversion: If you need to convert between types, use explicit conversion methods. For example:
  
  Use CONCATENATE for string operations.
  Use VALUE or CAST for structured data types.
  
  
  
  Review Data Dictionary Definitions: Check the definitions of the data elements, structures, or tables in the Data Dictionary. Ensure that they are defined correctly and that there are no discrepancies.
  
  
  Debugging: If the error occurs during runtime, use the ABAP debugger to trace the execution and identify where the casting is failing. This can help you pinpoint the exact location and reason for the error.
  
  
  Consult Documentation: Refer to the SAP documentation for more details on data types and casting in ABAP. This can provide insights into the correct usage and limitations.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the various data types available in ABAP, such as elementary types, structured types, and reference types.
  Type Conversion Functions: Learn about the built-in functions for type conversion in ABAP, such as CONVERT, CAST, and others.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be specific fixes or recommendations provided by SAP.
  
  By following these steps, you should be able to identify and resolve the cause of the DDLS344 error in your SAP environment.