AB-400 Explained: Dataverse Plug-ins and the Event Execution Pipeline

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Learn how Dataverse plug-ins enforce server-side business rules in this AB-400 Explained session. Explore the event execution pipeline, transaction behavior, execution context, and plug-in registration. Understand how to validate proposed record changes consistently across model-driven apps, Web API requests, cloud flows, and external integrations. Topics covered: • PreValidation, PreOperation, MainOperation, and PostOperation stages • Synchronous rollback behavior and asynchronous background execution • Update Target patches and Pre-Entity Images • Evaluating proposed row values while preserving explicit nulls • Stateless IPlugin implementations and thread-safe execution • Calling User identity and Dataverse permissions • Filtering Attributes, execution order, and image registration • Solution packaging for plug-in assemblies and registered steps • ITracingService, Plug-in Trace Logs, and failure diagnostics • Positive and negative testing across supported write routes For learners preparing for AB-400 and developers implementing and troubleshooting Dataverse plug-ins. #AB400 #Dataverse #PowerPlatform