diff --git a/config/mml/subscriber/udm_sub_mml_config.yaml b/config/mml/subscriber/udm_sub_mml_config.yaml
index 4ffa9938..aa152395 100644
--- a/config/mml/subscriber/udm_sub_mml_config.yaml
+++ b/config/mml/subscriber/udm_sub_mml_config.yaml
@@ -26,7 +26,7 @@ udm:
             type: "string"
             optional: "false"
             filter: ""
-            display: "Ki"
+            display: "KI"
             comment: ""
           - name: "amf"
             type: "string"
@@ -38,11 +38,11 @@ udm:
             type: "int"
             optional: "false"
             filter: "0~15"
-            display: "ALGO"
+            display: "Algo Index"
             comment: ""
           - name: "opc"
             type: "string"
-            optional: "false"
+            optional: "true"
             filter: ""
             display: "OPC"
             comment: ""
@@ -76,7 +76,7 @@ udm:
             type: "string"
             optional: "false"
             filter: ""
-            display: "Ki"
+            display: "KI"
             comment: ""
           - name: "amf"
             type: "string"
@@ -88,11 +88,11 @@ udm:
             type: "int"
             optional: "false"
             filter: "0~15"
-            display: "ALGO"
+            display: "Algo Index"
             comment: ""
           - name: "opc"
             type: "string"
-            optional: "false"
+            optional: "true"
             filter: ""
             display: "OPC"
             comment: ""