What configuration is necessary on a ServiceNow table to allow web-service calls?

To enable web-service calls on a ServiceNow table, it is essential to set the "Accessible from" option to "All application scopes." This configuration allows the table to be accessible from any application within ServiceNow, ensuring that web services can interact with the table regardless of the application's specific scope.

When web service calls are made, they can originate from different applications that may not share a common scope. Therefore, by setting the accessibility to "All application scopes," it guarantees that all web services have the necessary permissions to access the data in the table, facilitating seamless integration and data exchange.

This broad access level is particularly helpful in environments where multiple applications or services are interacting with the same data sources, as it minimizes restrictions that could impede communication or data retrieval processes.

In contrast, the other options either limit access to the current application scope, which would prevent outside applications from making web-service calls, or restrict access to specific roles, which does not allow for the flexibility needed for public API interactions. Keeping these potential restrictions in mind highlights why enabling access from "All application scopes" is the optimal choice for allowing web-service calls.