> Source: [sk120112](https://support.checkpoint.com/results/sk/sk120112)

# sk120112 - "Authentication error [error no. 147]" during SIC Initialization between Active and Backup Domain Management Servers

| Property | Value |
|----------|-------|
| Solution ID | sk120112 |
| Date Created | 2017-08-20 |
| Last Modified | 2020-11-10 |
| Technical Level | Advanced |
| Products | Multi-Domain Security Management Server |
| Versions | R82.10, R81.20, R82, R82.20 |
| OS | Linux, Gaia |

## Symptoms

- * SIC Initialization between Active and Backup Domain Management Servers fails with:

  `SIC Status for <Name of Backup Domain Management Server>: Not Communicating`  
  `
  Authentication error [error no. 147] 
  `  

  `
  Check that peer SIC is configured properly`  
  ` 
  and that system date and time on the`  
  `
  Security Management Server and peer are synchronized`
* The status of the Backup Domain Management Server in the SmartDomain Manager ("Overview" pane) is constantly changing between "`Started`" and "`Unknown`".

* Debug of CPD daemon (per [sk86320](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk86320)) on the Backup Domain Management Server shows the following during the SIC Initialization:

  `SIC Error for CpdPing: Certificate revoked`  
  `
  opsec_new_auth_conn_to_server: conn from IP_ADDRESS to entity (0xXXX) failed (323) SIC Error for CpdPing: Certificate revoked.`

## Cause

CRL Mismatch between Domain Management Servers.

The Backup Domain Management Server tries to fetch a certificate, which is already revoked. Therefore, SIC cannot be established.

## Solution

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

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