3548459 - Custom table created in ABAP Development Tool (developer Extensibility) not able to use it in key user extensibility app Custom CDS view

• In the Custom CDS View app, the custom table created using ABAP Development Tools (Developer Extensibility) is not visible.
• User created Custom table using ABAP Development Tool (developer Extensibility) and trying to use it in key user extensibility app custom CDS view.

SAP S/4HANA Cloud Public Edition

As per the Key User Extensibility | SAP Help Portal 

Key user extensibility objects and developer extensibility objects are allocated to different technical layers defined by their respective API state. By default, key user extensibility objects can’t use developer extensibility objects and vice versa. However, some key user development objects can use developer extensibility objects and vice versa. 

Custom fields and data source extensions created with key user extensibility can be used by the below developer extensibility objects:

• ABAP Classes and Interfaces
• CDS View Entities
• CDS Custom Entities

Some developer extensibility objects can be released for usage in key user extensibility by setting the respective API state with the ABAP Development Tools. Refer the help doc Setting the API Release State for how to set the API state

Then the developer extensibility objects can be used in the respective key user apps.

Below listed Developer Extensibility Objects can be used only in Custom Logic (Key User Extensibility Objects) and Custom CDS Views Key user App   

• CDS View Entities
• CDS Custom Entities
• ABAP Classes and Interfaces
• ABAP Data Types, Structures, Table Types and Tables

Custom table of developer extensibility can not be used in key user extensibility objects, usages of this type will not be available to use it in Custom CDS view app

Instead create a data definition, release it, and use it in the Custom CDS View app. 

For more info, can refer SAP help doc

Using a CDS Custom Entity for Data Modeling | SAP Help Portal

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