Handle edge cases in notifications

**Problem**
When working with utils, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

Start by locating the utilities responsible for notifications and read how their current error messages are produced. Clarify the notification edge cases and define the expected detailed messages before changing behavior; done means the relevant failures are handled and the messages improve debugging and maintenance.

Written by the indexing model from the issue text.