Hi,

so it is going in loop.

please add this in both the BRs

var updateInitiatedBy = updateInitiatedBy || current.sys_id.toString();

(function executeRule(current, previous /*null when async*/) {

    if(updateInitiatedBy != current.sys_id.toString()){   
     return;
    } 

// your code to update

})(current, previous); 

Regards
Ankur