How To Fix DDLS345 - CAST & of type & to & is not possible; lengths must match

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 345

• Message text: CAST & of type & to & is not possible; lengths must match

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS345 - CAST & of type & to & is not possible; lengths must match ?

  The SAP error message DDLS345 indicates that there is an issue with a data type conversion in a Data Definition Language (DDL) operation, specifically when trying to cast one data type to another. The error message states that the lengths of the two data types involved in the cast operation do not match, which is causing the operation to fail.
  Cause:
  This error typically occurs in the following scenarios:
  
  Mismatched Data Types: You are trying to cast a data type (e.g., CHAR, VARCHAR, etc.) to another type where the lengths of the two types do not match. For example, trying to cast a CHAR(10) to a CHAR(5) will result in this error.
  Database Schema Changes: If there have been recent changes to the database schema, such as altering the length of a field, and the DDL operation is not aligned with these changes, it can lead to this error.
  Inconsistent Data Definitions: If there are inconsistencies in the data definitions between different database objects (like tables, views, etc.), it can cause casting issues.
  
  Solution:
  To resolve the DDLS345 error, you can take the following steps:
  
  
  Check Data Types: Review the data types involved in the cast operation. Ensure that the lengths of the source and target data types match. If they do not, adjust the lengths accordingly.
  
  
  Modify the DDL Statement: If you are writing a DDL statement (like CREATE or ALTER), ensure that the lengths specified in the statement match the lengths of the existing data types.
  
  
  Update Database Schema: If the error is due to a recent change in the database schema, ensure that all related objects are updated to reflect the new definitions.
  
  
  Use Appropriate Functions: If you need to convert data types, consider using functions that handle length discrepancies, such as SUBSTRING or CAST with appropriate length specifications.
  
  
  Check for Triggers or Constraints: Sometimes, triggers or constraints on the database can also lead to this error. Review any triggers or constraints that might be affecting the data types.
  
  
  Consult Documentation: If you are unsure about the data types and their lengths, refer to the SAP documentation or the data dictionary (SE11) to get the correct definitions.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to check the definitions of the data types involved.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If you are developing or modifying ABAP programs, use the debugger to trace where the casting is happening and inspect the data types involved.
  
  By following these steps, you should be able to identify the root cause of the DDLS345 error and implement a suitable solution.