How To Fix DDLS342 - CAST: Source type & is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 342

• Message text: CAST: Source type & is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS342 - CAST: Source type & is not supported ?

  The SAP error message DDLS342 with the description "CAST: Source type & is not supported" typically occurs during the execution of a Data Definition Language (DDL) statement, particularly when there is an attempt to cast a data type that is not supported by the system.
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Unsupported Data Type: The source data type you are trying to cast is not supported in the context of the operation. This can happen if you are trying to convert a complex or user-defined type that the system does not recognize or support for casting.
  
  
  Incompatible Types: The source type and the target type are incompatible. For example, trying to cast a string to a numeric type without proper conversion functions.
  
  
  Database Compatibility: If you are using a database that has specific limitations or differences in data types compared to the SAP system, this can lead to casting issues.
  
  
  Syntax Errors: There may be a syntax error in the DDL statement that leads to the system misinterpreting the types involved.
  
  
  Solution:
  To resolve the DDLS342 error, you can take the following steps:
  
  
  Check Data Types: Review the data types involved in the cast operation. Ensure that the source type is compatible with the target type. Refer to the SAP documentation for supported data types and casting rules.
  
  
  Use Conversion Functions: Instead of directly casting, consider using conversion functions that are designed to handle type conversions safely. For example, use functions like TO_CHAR, TO_NUMBER, or CAST with supported types.
  
  
  Modify DDL Statement: If the DDL statement is incorrect, modify it to ensure that the types are compatible. Double-check the syntax and ensure that you are using the correct data types.
  
  
  Database Documentation: If you are working with a specific database (like HANA, Oracle, etc.), consult the database documentation for any specific limitations or requirements regarding data types and casting.
  
  
  Testing: Test the modified DDL statement in a development environment before applying it to production to ensure that it resolves the issue without introducing new errors.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for the specific version of the system you are using, as there may be version-specific considerations regarding data types and casting.
  
  By following these steps, you should be able to identify the cause of the DDLS342 error and implement a suitable solution.