irule required for redirection

You could use a switch statement instead, which would be more efficient. This should help.

switch -glob -- [string tolower "[HTTP::host][HTTP::uri]"] {
    "*abc.com/ordermanager*" -
    "*abc.com/ht360services*" -
    "*abc.com/bicommonui*" {
        pool pool_abc_ordermanager
    }
    default {
        pool pool_abc.com
    }
}