How can we prevent Duplicate CI for Name+Serial Number IRE combination

Suvetha S
Tera Contributor

Hi All,

 

We have changed the OOB IRE rule for Server table to look for Name + Serial Number combination. So if a server comes in with a matching Serial Number and Name IRE will update the existing records. In certain cases, Discovery couldn't fetch the serial number from the target servers and IRE is creating a duplicate CI. One CI - Name & Empty Serial Number, second CI- Same name with Serial number value. Initially we thought of entering serial number values for cmdb_serial_number manually to avoid the issue, but it didn't work as expected. Whenever Discovery is bringing empty serial number its creating a duplicate in the system. Any suggestions will be helpful. 

10 REPLIES 10

doug_schulze
ServiceNow Employee
ServiceNow Employee

Are you allowing null attributes for your identifier entries, I think by not allowing it should help.