If the service principal level for the domain is at process level, the domain requires an SPN and keytab file for every service that you create in the domain. Before you enable a service, verify that an SPN and keytab file is available for the service. Kerberos cannot authenticate the application service if the service does not have a keytab file in the Informatica directory.
If SPNs and keytab files are not available for the application services you plan to create on the domain, you must create the SPN and keytab file before you enable the service. You can use the Informatica Kerberos SPN Format Generator to generate the format of the SPN and keytab file name for the service. To save time, decide on the names of the services you want to create and the nodes on which they will run. Then run the utility to generate the SPN and keytab file name format for all the services at one time.