To Do's: Power Apps Custom WebAPI error 'Resource not found for the segment'

Related to error message "Resource not found for the segment"

From MS Documentation:

This error occurs when you use the incorrect name for a resource. That resource might be the name of an entity set, a function or an action. These resource names are case sensitive., there is an entity set called accounts, but not one named Account etc.

Below are things that can be verified:

1. Check the URL to make sure the environment and versions are correct
2. Validate the Action name
3. Check in the actions section in Solution if it is available.
4. Check in the WebAPI metadata if it is available
5. Make sure all customizations are published in your solutions.
6. Validate the WebAPI accessibility with the System Admin user role

Hope one of them would resolve.