Apply the service using SMP/E APPLY command. You should use the SMP/E APPLY command with the CHECK operand first. Check the output; if it shows no conflict, rerun the APPLY without the CHECK option. This can be done from the SMP/E dialogs in ISPF or using a batch job.

Do not apply the documented USERMODs until PTF service has been ACCEPTed. This is to avoid regressing service to the affected parts.