Message type: E = Error
Message class:  DDLS - For DDL source handling 
Message number: 451
Message text: Dependent objects contain errors
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The SAP error message DDLS451 indicates that there are dependent objects in the system that contain errors, which prevents the successful execution of a Data Definition Language (DDL) statement, such as creating or modifying database objects.
Cause: The error typically arises due to one or more of the following reasons: Dependent Objects with Errors: There are objects (like tables, views, indexes, etc.) that are dependent on the object you are trying to modify, and these dependent objects have errors. Inconsistent State: The dependent objects may be in an inconsistent state due to previous failed operations or incomplete changes. Missing Dependencies: Some required dependencies for the object you are trying to modify may be missing or incorrectly defined. Database Constraints: There may be constraints or rules in the database that are violated by the changes you are trying to make.
Solution: To resolve the DDLS451 error, you can follow these steps: Check for Errors in Dependent Objects: Use transaction codes like
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