Message type: E = Error
Message class:  DDLS - For DDL source handling 
Message number: 520
Message text: In the object hierarchy, there is at least one pooling/cluster table
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The SAP error message DDLS520 indicates that there is at least one pooling or cluster table in the object hierarchy you are trying to work with. This error typically arises when you are attempting to perform certain operations, such as generating a Data Definition Language (DDL) statement or creating a database object, that are not supported for pooled or cluster tables.
Cause: Pooled and Cluster Tables: In SAP, pooled and cluster tables are special types of database tables that are used to optimize storage and performance. They are not directly supported in certain database operations, especially when working with modern database systems that do not support these table types. Object Hierarchy: The error suggests that the object you are trying to manipulate includes one or more pooled or cluster tables, which are not compatible with the operation you are attempting.
Solution: Identify the Tables: Check the object hierarchy to identify which tables are pooled or
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