Can you provide an example of an error budget calculation for a mobile application's new feature?

Let's say you're launching a new feature in a mobile app: real-time location sharing. You decide on an error budget of 5% downtime per month. You estimate that the feature will have 100,000 active users. 5% of 100,000 is 5,000 user sessions that could experience errors. You'd then analyze the potential error sources (e.g., GPS issues, network connectivity, server errors) and allocate a portion of the budget to each, aiming to minimize the impact on the overall user experience. Tools to help monitor error rates are essential.