change data model

DataView.acn

 Taps DEFINITIONS ::= BEGIN
     APID[encoding pos-int, encode-values, size 11]
+    APUserID[encoding pos-int, encode-values, size 16]
     TYPE8b-ID[encoding pos-int, size 8]
     TC[]{
         packet-version-no   NULL    [pattern '000'B],
@@ -15,8 +16,8 @@ Taps DEFINITIONS ::= BEGIN
             ack-successful-progress         [],
             ack-successful-start            [],
             ack-successful-acceptance       [],
-            service-type-id                 TYPE8b-ID [],
-            service-subtype-id              TYPE8b-ID [],            
+            --service-type-id                 TYPE8b-ID [],
+            --service-subtype-id              TYPE8b-ID [],            
             source-id                       []
         }
     }

DataView.asn

 PUS-Implicit-Knowledge DEFINITIONS ::=
 BEGIN
-TC-type {APID} ::= SEQUENCE {
+TC-type {APID, APUserID} ::= SEQUENCE {
     dest-apid           APID,
     sequence-count      INTEGER(0..16383),
     packet-length       INTEGER(0..65535),
-    secondary-header    TC-Secondary-Header {APID}
+    secondary-header    TC-Secondary-Header {APUserID}
 }
 
 TM-type {APID} ::= SEQUENCE {
@@ -13,12 +13,12 @@ TM-type {APID} ::= SEQUENCE {
     packet-length       INTEGER(0..65535)
 }
 
-TC-Secondary-Header {APID} ::= SEQUENCE {   
+TC-Secondary-Header {APUserID} ::= SEQUENCE {   
     ack-successful-completion BOOLEAN,
     ack-successful-progress   BOOLEAN,
     ack-successful-start      BOOLEAN,
     ack-successful-acceptance BOOLEAN,
-    source-id                 APID
+    source-id                 APUserID
 }
 
 END
@@ -39,8 +39,16 @@ APID ::= ENUMERATED {   --let ACN manage the "11 bits" constraint
     sc-sensorB(4),
     sc-cpdu(5)
 }
+
+APUserID ::= ENUMERATED {   --let ACN manage the "16 bits" constraint
+    ground-User(1),
+    sc-routingUser(2),
+    sc-sensorA-User(3),
+    sc-sensorB-User(4),
+    sc-cpdu-User(5)
+}
 -- Instantiate the Telecommand type
-TC ::= TC-type{APID}
+TC ::= TC-type{APID, APUserID}
 -- Instantiate the Telemetry type
 TM ::= TM-type{APID}