CREATE PERSISTENT ENTITY ... EXTENDS a non-persistent entity is silently created non-persistent #1772

mxcli version: v0.30.0 (2026-11-02T17:31:03Z)
OS: Windows 11 (Git Bash, MINGW64)

Steps to reproduce

1. In a module, create a non-persistent entity MyModule.Base.
2. Run CREATE PERSISTENT ENTITY MyModule.Child EXTENDS MyModule.Base (...) through mxcli exec.
3. Run describe entity MyModule.Child.

Expected

Either the statement is refused, because a persistent entity cannot extend a non-persistent one, or exec prints a warning that the declared PERSISTENT was overridden by the parent's persistability.

Actual

The entity is created as non-persistent. Exec gives no warning, and describe shows a non-persistent entity. A script that states PERSISTENT gets something else without being told.

Related: omitted values cannot be told from stated ones

These are smaller, but they share the cause that the model keeps no trace of what the script left out:

• CREATE ... CALL REST SERVICE without Timeout is stored as Timeout: 300. describe cannot tell it from an explicit 300.
• CREATE ASSOCIATION without TYPE or OWNER, and CREATE CONSUMED ODATA SERVICE without ODataVersion, store the default with no trace that it was omitted.

A warning on exec when a default is filled in would let a script author see it.