> Source: [sk120612](https://support.checkpoint.com/results/sk/sk120612)

# sk120612 - "License Validation failed: interface not define" error when creating CMA/ Domain

| Property | Value |
|----------|-------|
| Solution ID | sk120612 |
| Date Created | 2017-09-25 |
| Last Modified | 2017-09-27 |
| Technical Level | Advanced |
| Products | Multi-Domain Security Management Server |
| Versions | R82.10, R81.20, R82, R82.20 |
| OS | Gaia |

## Symptoms

- * Error when creating CMA / Domain:

  ```
  
  "This operating requires a valid license. 
  License validation failed: Domain Management Server Interface Manager is not defined"
  ```

* The `mdsstat` command does not return any output.

## Cause

No interface or incorrect/interface with no IP address has been defined as the MDS leading interface

## Solution

This solution requires authentication. Please log in to view the full solution.

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