Every panel we ship has a label on the bottom right of the panel, on this label you will see the panel id which is the panel identifier, the best way to approach this is by opening up your design in the MachineBuilder and following the below steps :
Step 1 - Select the tree diagram feature
Step 2 - Then select the parts button as shown in the image
Step 3 - Click on the panel directly off of your design canvas
Step 4 - On the right hand side, you will see the panel part number and id which will be the same one as the panels you have received
For any other issues, do not hesitate to reach to integrationsupport@vention.cc!