What is causing complaints during User Acceptance Testing in a Developer sandbox?

When users are conducting User Acceptance Testing (UAT) in a Developer sandbox, they often encounter various issues and complaints because a Developer sandbox does not fully replicate the functionalities and performance characteristics of the production environment.

Testing in a Full Sandbox is the most suitable choice for UAT. A Full Sandbox is a complete copy of your production organization, including all data, metadata, and the exact setup that exists within the live environment. This allows users to experience testing under realistic conditions that closely mirror their actual working environment. It enables them to test not only the functionalities but also to evaluate performance, integration, and user experience as they would in production.

By using a Full Sandbox, users are more likely to uncover issues that would not be noticeable in a Developer sandbox, where only a limited amount of data and a subset of functionality are available. This ensures a more effective UAT process and better feedback for any necessary adjustments or improvements before the changes are deployed into production.

In contrast, the other options do not provide the level of fidelity needed for thorough UAT. Testing in a Partial Sandbox or a Developer Pro sandbox would still fall short of offering the full scope of production replication since they may not include all the data or configurations present in the complete production environment.