create de duplication tasks

[dick linschoten]

Servicenow creates deduplication tasks which works ok however there are lots of records in the cmdb that are also duplicates but where not initially identified as a duplicate. 

is there a way to reprocess the create deduplication task script to look for old entries to auto create the task,
I do have a ui action defined to manualy create the duplicates. but I would like to automate this.

[Gurpreet07]

Please check if this is something that can help ?

https://docs.servicenow.com/bundle/xanadu-servicenow-platform/page/product/configuration-management/...

[dick linschoten]

this describes how you can configure the IRE and from there determine if things are considered a duplicate or not. 
what I'm looking for is when ci are already in the cmdb but if you apply ire rule now on it they are to be considered a duplicate. the deduplication task script doesn't pick these up so you can only detect the numbers when going manually through the cmdb. 
what I'm looking for is how to run the deduplication task generation script on all items already in the cmdb. 

[dick linschoten]

to give somewhat more details on the situation we have. 

not detected as duplicate
but 

this one is. 
so what trigged here in the second case that it was identified as a duplicate 
and the first case with simular fields filled
inboth cases one record was created outside of ire and the other via ire.

so if these record not matching a deduplication task how to auto generate them. by re running an ire over the cmdb

[Sandeep90]

@dick linschoten  Please run the correctness job and it will detect all the duplicates for the independent CIs. 

https://docs.servicenow.com/bundle/xanadu-servicenow-platform/page/product/configuration-management/...