> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gmicloud.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Running a Workflow

### **5.1 How Execution Works**

Nodes execute in the order defined by the workflow graph, respecting dependencies and input/output connections.

### **5.2 Required Inputs vs Optional Inputs**

* **Required Inputs** must be set for the workflow to be valid.
* **Optional inputs** can be added for extra control (e.g., image uploads, aspect ratio).

### **5.3 Monitoring Execution Status**

Track workflow progress using:

* Progress bar
* Prompt execution status
* Output preview

### **5.4 Handling Errors & Invalid Inputs**

Errors appear in the execution panel with messages indicating which node failed and why.

### **5.5 Output Retrieval (Images / Videos / Audio)**

* You must **use Save nodes** to retrieve workflow outputs.
* **Image → Save Image**
* **Audio → Save Audio**
* **Video → Save Video**
* **Download Outputs:** Right click the **Save nodes** to save generated outputs (image, video, or audio) directly to your local machine.