# Policy Workflow Step 15
We need to add another step to close out the sub-steps in the cycle. This is accomplished by creating the IREC document CSD002 – Device Registration. This is created just like the document from earlier steps called CSD001 as a verifiable credential and stored in the guardian.
We click back to the “create\_new\_sensors\_steps” process step and add a “Send” action by clicking on the “Send” button in the top navigation bar.
We then add a tag, type - of course, a verifiable credential, and entity – our inverter sensor. And done. We have completed the steps to add an inverter sensor to a project.
**Programmatically this workflow step looks like this:**
```
// Also save it in the DB.
{
"tag": "CSD02_device_registration",
"blockType": "sendToGuardianBlock",
"dataType": "vc-documents",
// Document in the DB is labeled as "Inverter" to enable later filtering in the grid.
"entityType": "Inverter",
"stopPropagation": false,
"uiMetaData": {}
}
],
//"cyclic" - go back one step to enable the creation of another sensor.
"cyclic": true
}
]
},
```
Lastly, just create a new Container Block to group all components on the page with MRV data.
**Programmatically this workflow step looks like this:**
```
// Create interfaceContainerBlock to group all components on the page with MRV data.
{
"blockType": "InterfaceContainerBlock",
"tag": "mrv_page",
"defaultActive": true,
"permissions": [
"INSTALLER"
],
"uiMetaData": {
"type": "blank",
"title": "MRV"
},
```
And done. We have completed the steps to add an inverter sensor to a project.
