diff --git a/update_psa.conf b/update_psa.conf
index 6fd5d0a..516d441 100644
--- a/update_psa.conf
+++ b/update_psa.conf
@@ -8,6 +8,15 @@
     ""                      :   "unique customer identifier",
     "customer_id"           :   "281",
 
+    ""                      :   "zone file for PSA",
+    "zone"                  :   "/etc/zone_nr",
+
+    ""                      :   "customer number of PSA",
+    "customer_id_"          :   "/etc/cust_nr",
+
+    ""                      :   "machine id of PSA",
+    "machine_nr"            :   "/etc/mach_nr",
+
     ""                      :   "each location can have multiple",
     ""                      :   "zone-groups and/or zones",
     ""                      :   "0-index used as size of following array",