# Dynamic Activity - Go SDK

> This section explains Dynamic Activities with the Go SDK

## Set a Dynamic Activity 

A Dynamic Activity in Temporal is an Activity that is invoked dynamically at runtime if no other Activity with the same name is registered.
An Activity can be registered as dynamic by using `worker.RegisterDynamicActivity()`.
You must register the Activity with the Worker before it can be invoked.
Only one Dynamic Activity can be present on a Worker.

The Activity Definition must then accept a single argument of type `converter.EncodedValues`.
This code snippet is taken from the [Dynamic Workflow example from samples-go](https://github.com/temporalio/samples-go/tree/main/dynamic-workflows).

```go
func DynamicActivity(ctx context.Context, args converter.EncodedValues) (string, error) {
	var arg1, arg2 string
	err := args.Get(&arg1, &arg2)
	if err != nil {
		return "", fmt.Errorf("failed to decode arguments: %w", err)
	}

	info := activity.GetInfo(ctx)
	result := fmt.Sprintf("%s - %s - %s", info.WorkflowType.Name, arg1, arg2)

	return result, nil
}
```