Some requests' Request Status history show "No available history".
The catalog application's registration name in EEM on the newly upgraded env is different from the one when it was at previous version .
For example , the catalog application in 14.1 may be registered as "Service Catalog" , during upgrade , you may have new catalog application registered as "CA Service Catalog" . So, for all those old requests ( which existed prior to upgrade ) , system user was named "CERT-Service Catalog" . new catalog 17.2 doesn't know what it is ( since the new catalog was registered as CA Service Catalog in EEM , and the system user was supposed to be "CERT-CA Service Catalog" then here ) . That is the cause of this problem .
Release : 17.2 , 17.1
Component : CA SERVICE CATALOG