Hi experts!
I created an List Report Application from TemplateSelection for SAP-table T024D with
an SEGW CRUD-service.
The CRUD-service works fine and i can use it for all entries in the table for create/read/update/delete them.
In manifest.json i put in in the ‘pages’-section this for fully managing all entried in the table via the app:

And in SEGW re-definitions of CREATE_ENTITY & UPDATE_ENTITY i put error-checking for 2 fields of table T024D in:
If an error is detected in these methods an execption is thrown with HTTP-code 409:


The problem is i can see in the front-end in the console the error

but the app gives a positive-feedback-toast although the change has been not executed in the database:

Is there a way to insert my error-message into this template-app as toast or error-window?
Maybe in the code of template-buttons ‘Create’ or ‘Edit’?:
Please help!