> Source: [sk163655](https://support.checkpoint.com/results/sk/sk163655)

# sk163655 - mds backup fails to restore with a "work_session" error

| Property | Value |
|----------|-------|
| Solution ID | sk163655 |
| Date Created | 2019-11-27 |
| Last Modified | 2023-06-27 |
| Technical Level | Advanced |
| Products | Multi-Domain Security Management Server |
| Versions | R82.10, R81.20, R82, R82.20 |
| OS | Gaia |

## Symptoms

- mds backup fails to restore/ migrate export with upgrade tool fails with this error on the console:  

`
ERROR: insert or update on table "ct_work_session_domain_ids" violates foreign key constraint "fk_ct_`**work_session** `_domain_ids_worksession_objid"`  
`
DETAIL: Key (worksession_objid)=(186e53f2-ed2d-4793-9569-01814d6fa161) is not present in table "worksession".`  
`
mds_restore > Failed to restore the database.`

## Solution

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