Here are the possible problems:
- No supply for products
- No demand for products
- No lanes to connect supply to demand
- Lanes are in the wrong direction to facilitate flow
Here are some things you can try:
- Confirm you have demand on your customer nodes
- left click on any customer
- Click on its name in the inspector
- Scroll down to make sure that there is an entry in the demand section for a valid product (make note of the product name)
- Confirm you have a supply for your products
- left click on the node you believe is your supply facility (the first node in your supply chain)
- Click on its name in the inspector
- Scroll down to make sure that supply is enabled for all products this node should be supplying
- Confirm you have lanes that connect the supply node all the way to the demand node
- Walk through all the lanes that lead from the supply node to the customer node
Other things to try:
- Click and drag all nodes to see if geocoding them will fix it
- Delete all lanes and try to connect a supply node directly to a customer node--as a test
Here is a great tip: Delete all customers but 1 and see if you can create a path from a supply facility to that customer.