I created  a SLA Rule for a specific combination of Category/Subcategory/Element,  but I think is not working because  when a user  creates an Incident for that specific  Category/Subcategory/Element the Expiration Date that is Taken is the  one set by the Priority.

I mean:

I have this:   Priority 3 --> The ticket can be resolved  in 3 Days.

But  SLA for one specific  Category/Subcategory/Element says that the ticket MUST be resolved   in 8 hours.

So if a User creates an incident with Priority3 and that specific  Category/Subcategory/Element , the expiration date is in 3 days,  and I  expect  it to be in 8 hours

Do you know how to apply correctly the SLA ?

Thanks!

Sergio