diff --git a/src/cc.tsc b/src/cc.tsc
index 68f136b..404099e 100644
--- a/src/cc.tsc
+++ b/src/cc.tsc
@@ -1,4 +1,3 @@
-doc > transport status codes for Control Channel (0xfe)
-
-hex unkown_sctp_error               0xfeffffff;
+// uncomment this line when there are codes to add:
+// doc > transport status codes for Control Channel (0xfe)
 
diff --git a/src/sctp.tsc b/src/sctp.tsc
new file mode 100644
index 0000000..3ce9b0b
--- /dev/null
+++ b/src/sctp.tsc
@@ -0,0 +1,3 @@
+doc > transport status codes for p≡p over SCTP (0x04)
+
+hex unkown_sctp_error               0x04ffffff;
diff --git a/src/transport_status_code.yml2 b/src/transport_status_code.yml2
index 762cf72..5e644ff 100644
--- a/src/transport_status_code.yml2
+++ b/src/transport_status_code.yml2
@@ -39,6 +39,7 @@ enum transport_status_code {
     include ./email.tsc
     include ./rce.tsc
     include ./pdl.tsc
+    include ./sctp.tsc
     include ./cc.tsc
 }