Assignment lookup rule is not working

[Dinesh Kumar C]

Hello folks,

I created one new assignment rule on Incident form and its work fine . But now i am getting confusion on below criteria .

I would like to assign an incident to particular group based on Category type and it should depends on Subcategory type . So i have modified existed Data Lookup Definition   as below .

Defined matcher field defination on only Category type and setter field definition on assignment_group       , and i have created an assignment lookup rule when category is network automatically ticket value populate on assignment_group is network .

Now my query is like this rule in not working when ever i change category type to network its not assigning . So cant we change any field value based on only category type without including Subcategory . And this is the only rule exists on Incident table so no chance or order dependency .

Thanks in advance .

[Michael Fry1 · Accepted solution]

On the Setter Field Definition, if Always replace is false, it won't under the group when category changes. If true, it will replace.

[Dinesh Kumar C]

Thank you @Michael   for response , i have modified alwasys replace to true in setter field and now its working fine . Could you please let me what exactly it do and also could you please explain will Assignment look up role works if Source table field and matcher table field are different ?

[Michael Fry1]

if Source table field and matcher table field are different - will not work, but you can create lookup rules, definition on different tables, such as Change, Problem, Req Items.

Section 2 explains how to setup for different tables: Data Lookup and Record Matching Support - ServiceNow Wiki

[Dinesh Kumar C]

Ha thank you Michale and could you explain me what exactly Always replace   field is ? What is the behavior of this field ?