3814180 - What is and how does "Allow Auto Cancel of trips that require approval" setting works?

What is and how does the setting "Allow Auto Cancel of trips that require approval" under the travel configuration page works?

What is and how does the setting "Allow Auto Cancel of trips that require approval" works? How does the system triggers auto cancellation? Why was not a trip auto cancelled when approval deadline expired? , KBA , CON-EXP-APR , Approvals , CON-MOB-TRV-HTL , Hotel , CON-SRV-TRV-RAL , Rail , CON-SRV-TRV-ADM-LAN , View Airlines , CON-CA-TLS-IEM-IMP , Import Credit Cards , Problem