How To Fix DT109 - It does not make sense to enter a pool/cluster name here

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 109

• Message text: It does not make sense to enter a pool/cluster name here

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT109 - It does not make sense to enter a pool/cluster name here ?

  The SAP error message DT109, which states "It does not make sense to enter a pool/cluster name here," typically occurs in the context of data dictionary objects, particularly when dealing with database tables or views in the ABAP Dictionary.
  Cause:
  This error usually arises when you are trying to define a table or a view in a way that is not compatible with the underlying database structure. Specifically, it indicates that you are attempting to use a pool or cluster table name in a context where it is not appropriate. Pool and cluster tables are special types of tables in SAP that are used to store data in a more compact form, and they have specific use cases.
  Solution:
  To resolve this error, you should:
  
  
  Check the Table Type: Ensure that you are not trying to create or modify a transparent table, view, or other database object using a pool or cluster table name. If you are working with a transparent table, make sure you are using the correct naming conventions and types.
  
  
  Use Correct Naming: If you are defining a new table or view, ensure that you are using a valid name that does not conflict with existing pool or cluster tables. Transparent tables should have names that do not start with the reserved prefixes used for pool or cluster tables.
  
  
  Review the Context: Look at the context in which you are entering the pool/cluster name. If you are in a transaction or program that does not support pool or cluster tables, you will need to adjust your approach.
  
  
  Consult Documentation: If you are unsure about the types of tables and their appropriate usage, refer to the SAP documentation or help resources for guidance on data dictionary objects.
  
  
  Related Information:
  
  
  Pool Tables: These are used to store data from multiple logical tables in a single physical table. They are typically used for smaller tables that do not require a separate database table.
  
  
  Cluster Tables: These are similar to pool tables but are used to store data that is logically related. They can contain multiple records from different tables in a single physical table.
  
  
  Transparent Tables: These are the most common type of database table in SAP, where each table corresponds to a single database table.
  
  
  ABAP Dictionary: The ABAP Dictionary is the central repository for all data definitions in an SAP system. Understanding how to navigate and use the ABAP Dictionary is crucial for managing database objects effectively.
  
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or ABAP development team for further assistance.