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+# VM Provision workflow
+Wrapper workflow which unpacks the vRA request, identifies the target vCenter, calls [Generate Unique Hostname](../Generate%20Unique%20Hostname/) for each compute resource in the request, and returns the newly-generated names back to vRA so they get applied to the deployment.
+
+![Schema](schema.png)
+
+## Inputs/Outputs
+| Name | Type | Direction | Description |
+|:--- |:--- |:---|:---|
+| `inputProperties` | Properties | Input | full request payload from vRA |
+| `resourceNames` | Array/string | Output | contains the newly-generated hostname(s) to return to vRA |
+| `customProperties` | Properties | Output | modified to insert `vCenterName` and return back to vRA |
+
+## Variables
+| Name | Type | Value | Description |
+|:--- |:--- |:--- |:--- |
+| `digits` | number| | optional manually-specified numbering suffix; overrides automatic numbering but still checks for conflicts |
+| `domain` | string | | domain used for DNS checks |
+| `endpointId` | string | | vCenter identifier used internally by vRA |
+| `nameBase` | string | | letter-based portion of the VM naming format |
+| `newNames` | Array/string | | new names generated by `Generate Unique Hostname` |
+| `originalNames` | Array/string | | original resource names |
+|`vCenterName` | string | | fully-qualified vCenter name |
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