Platform Event Delivery Delay During Platform-Event-Triggered Flow Deployment

During metadata deployment (for example, via VS Code or Metadata API) involving a Platform Event–Triggered Flow, event processing behavior is temporarily impacted if the deployment includes changes to that flow.

While deployment is in progress:

• The flow may not actively subscribe to platform events.
• Platform events published during this time are not processed immediately.

After deployment completes:

• The updated version of the flow is automatically activated.
• The flow resumes subscribing to the configured platform events.
• Events published during the deployment window are processed after activation.

This behavior ensures controlled activation of flow changes and maintains system stability during deployments. Although no platform events are lost, a short delay in processing may occur depending on the deployment duration and complexity.